Saatva Mattress Wiki 2021 Online Today | SWI

Looking for Saatva Mattress Wiki…

Founded in 2010, Saatva specializes in direct-to-consumer luxury bed mattress under three trademark name: Saatva, Loom & Leaf, and Zenhaven. In between these 3 brand names, the company offers numerous bed mattress designs, including the all-foam Loom & Leaf;& Leaf; the latex Zenhaven; the airbed, Solaire; and the hybrid

The Saatva Bed mattress, likewise called the Saatva Classic, combines two layers of coils, 2 layers of polyfoam, and a thin layer of memory foam. in 3 firmness alternatives, which it calls Plush Soft, Luxury Company, and Company. These alternatives represent soft (3 on the 10-point firmness scale where 10 is firmest), medium company (6 ), and company (8) respectively.

Offered in two height choices: 11.5 inches and 14.5 inches. While the 11.5-inch version falls in the typical density range, the 14.5-inch choice is prominent, so it might need deeper sheets.

This evaluation will discuss the Mattress thorough. We’ll cover its construction, performance, sizing, rates, client reviews, and company policies. We’ll also highlight how the various versions of the  mattress vary in efficiency and who each may be best for.

Pick Plush Soft if …

You weigh under 130 pounds.
You choose greater movement seclusion.
You like a plush feel.

Select High-end Firm if …

You weigh in between 130 and 230 pounds.
You sleep with a partner from a different weight group or with various position choices.
You prefer a balance of conforming and support.

Pick Company if …

You weigh over 130 pounds.
You prefer a firm feel.

Saatva Mattress Review Breakdown

The hybrid mattress that uses a combination of products, consisting of a comfort layer with fiber fill, polyfoam, memory foam, and took coils in addition to a support group of hourglass coils.

It omes in 3 firmness options and 2 height choices. The firmness choices are Luxurious Soft (3 ), High-end Company (6 ), and Company (8 ). The height alternatives are 11.5 inches and 14.5 inches.

A knit cover built of organic cotton enrobes the sleep surface. This product allows air flow into the bed mattress while feeling soft to the touch.

All 3 firmness levels have comparable convenience systems that consist of a Euro-top with sewn-in cushioning. The Plush Soft and High-end Firm versions use 1.25 inches of soft polyfoam, while the Firm version utilizes 1.5 inches of company polyfoam. All of the firmness choices likewise consist of.75 inches of fiber fill and 1 ounce of Dacron to cushion the surface area of the bed mattress.

Beneath the Euro-top, there is a.625-inch layer of polyfoam and a.375-inch layer of memory foam. This thin layer of memory foam supports the sleeper’s lumbar region to promote better spine alignment. Next, a 4-inch layer of 14.5 gauge foam-encased coils adjusts to the sleeper’s body while supporting strong air blood circulation throughout. This coil gauge is close to the middle of the range, stabilizing responsiveness and contouring.|Underneath the Euro-top, there is a.625-inch layer of polyfoam and a.375-inch layer of memory foam. Next, a 4-inch layer of 14.5 gauge foam-encased coils changes to the sleeper’s body while supporting strong air circulation throughout.}

These coils are crafted to make the bed mattress more resilient while enabling for significant airflow through the bed mattress. The 11.5-inch variation of the mattress utilizes a 4-inch layer of coils, while the 14.5-inch variation utilizes a 7-inch layer.

Which mattress is better Saatva or Casper?

Mattress Type
Soft– 3 (Plush Soft choice)/ Medium Firm– 6 (High-end Firm alternative)/ Firm– 8 (Company choice).
Hybrid.
Building and construction.

Constructed of a number of layers that consist of polyfoam, memory foam, and 2 coil systems.

Cover Material:.

Knit Organic Cotton.

Comfort Layer:.
Plush Soft and High-end Firm:.

Euro-Top with Sewn-In Material [1.25 ″ Soft Polyfoam,.75 ″ Fiber Fill, 1 oz. Dacron]
.625 ″ Polyfoam.

.375 ″ Memory Foam Lumbar Pad.

4 ″ Pocketed Coils (Foam-Encased, 14.5 Gauge).

Company:.

Euro-Top with Sewn-In Product [1.5 ″ Polyfoam,.75 ″ Fiber Fill]
.625 ″ Polyfoam.

.375 ″ Memory Foam Lumbar Pad.

4 ″ Pocketed Coils (Foam-Encased, 14.5 Gauge).

Assistance Core:.

4 ″ or 7 ″ Hourglass Coils (13 Gauge).

.5 ″ Loft Pad and.875 ″ Fiber Pad.

Foam Boundary Encasing.

Mattress Prices and Sizing Saatva Mattress Wiki

Compared to similarly-constructed high-end hybrid models, the Saatva Mattress is an affordable option. Consumers can select between 3 firmness alternatives and two height choices at no extra charge. Is offered in all 6 standard bed mattress sizes.

Sizes Dimensions Height Weight Price
Twin 38″ x 75″ 11.5″ or 14.5″ 100 lbs. $799
Twin XL 38″ x 80″ 11.5″ or 14.5″ 105 lbs. $999
Full 54″ x 75″ 11.5″ or 14.5″ 110 lbs. $1,299
Queen 60″ x 80″ 11.5″ or 14.5″ 120 lbs. $1,399
King 76″ x 80″ 11.5″ or 14.5″ 145 lbs. $1,799
California King 72″ x 84″ 11.5″ or 14.5″ 145 lbs. $1,799
Split King 76″ x 80″ (2pcs.) 11.5″ or 14.5″ 145 lbs. $1,999
Split California King 72″ x 84″ (2pcs.) 11.5″ or 14.5″ 145 lbs. $1,999

What hotels use Saatva mattress?

Firmness and feel are 2 of the most essential elements of any bed mattress– let’s see how company the Saatva mattress is and what it must feel like for average weight, heavyweight, and lightweight sleepers.

How Firm Is The Saatva?

The Saatva mattress is available in three firmnesses– Plush Soft, Luxury Company, and Company — we reviewed the Luxury Company version, and it felt near to a 7/10 in regards to firmness. The pillow top is quite soft on top of it, but the two layers of coils underneath are on the firmer side; combined, they make the Saatva mattress feel just a bit firmer-than-average.

We will say, the Plush Soft version makes our list for the very best soft bed mattress, so if you’re looking for something soft, that’s the way to go. Is a great worth that occurs to be both encouraging and comfy at the same time. You can conserve $200 on a mattress simply by clicking the link listed below.

Is Saatva mattress a good mattress?

Back sleeping on the mattress, we are experiencing an outstanding balance of convenience and assistance, so our hips sink into the pillow top however not too far. The bed mattress likewise supplies an outstanding quantity of lumbar assistance, making it one of the finest bed mattress for lower back pain and sciatica.

Saatva Mattress Wiki

When we are side sleeping, offering us a decent quantity of pressure relief on our hips and shoulders, however we do think that those who sleep primarily on their side will prefer the Plush Soft design. Saatva Mattress Wiki

Stomach sleeping, the is not a bad match at all; our hips do not sink in too far, and we are feeling solid total support. As we will discuss below, larger stomach sleepers may need a firmer mattress and ought to think about the Firm model. It might actually be a good mattress for stomach sleepers.

 

Saatva Mattress Wiki 2021 Online Today | SWI

Looking for Saatva Mattress Wiki…

Founded in 2010, Saatva specializes in direct-to-consumer luxury mattresses under 3 trademark name: Saatva, Loom & Leaf, and Zenhaven. Between these three brand names, the company sells a number of mattress models, consisting of the all-foam Loom & Leaf;& Leaf; the latex Zenhaven; the airbed, Solaire; and the hybrid

The Saatva Bed mattress, also called the Saatva Classic, combines 2 layers of coils, two layers of polyfoam, and a thin layer of memory foam. in 3 firmness options, which it calls Plush Soft, Luxury Company, and Company. These choices represent soft (3 on the 10-point firmness scale where 10 is firmest), medium firm (6 ), and company (8) respectively.

Offered in two height options: 11.5 inches and 14.5 inches. While the 11.5-inch version falls in the average thickness range, the 14.5-inch option is high-profile, so it might need much deeper sheets.

This review will talk about the Mattress in-depth. We’ll cover its building and construction, performance, sizing, prices, client reviews, and company policies. We’ll also highlight how the various versions of the  mattress vary in efficiency and who each may be best for.

If …

You weigh under 130 pounds, choose Plush Soft.
You choose greater movement seclusion.
You like a plush feel.

Select High-end Firm if …

You weigh between 130 and 230 pounds.
You sleep with a partner from a various weight group or with different position choices.
You prefer a balance of adhering and support.

Pick Company if …

You weigh over 130 pounds.
You prefer a firm feel.

Saatva Mattress Review Breakdown

The hybrid bed mattress that uses a mix of products, consisting of a comfort layer with fiber fill, polyfoam, memory foam, and pocketed coils in addition to a support group of hourglass coils.

It omes in 3 firmness choices and two height alternatives. The firmness choices are Plush Soft (3 ), Luxury Company (6 ), and Firm (8 ). The height alternatives are 11.5 inches and 14.5 inches.

A knit cover built of organic cotton enrobes the sleep surface. This material enables airflow into the mattress while feeling soft to the touch.

All 3 firmness levels have similar convenience systems that consist of a Euro-top with sewn-in cushioning. The Plush Soft and Luxury Firm variations use 1.25 inches of soft polyfoam, while the Firm variation uses 1.5 inches of company polyfoam. All of the firmness options likewise consist of.75 inches of fiber fill and 1 ounce of Dacron to cushion the surface area of the mattress.

Beneath the Euro-top, there is a.625-inch layer of polyfoam and a.375-inch layer of memory foam. This thin layer of memory foam supports the sleeper’s lumbar region to promote better spine alignment. Next, a 4-inch layer of 14.5 gauge foam-encased coils gets used to the sleeper’s body while supporting strong air blood circulation throughout. This coil gauge is close to the middle of the range, stabilizing responsiveness and contouring.|Beneath the Euro-top, there is a.625-inch layer of polyfoam and a.375-inch layer of memory foam. Next, a 4-inch layer of 14.5 gauge foam-encased coils changes to the sleeper’s body while supporting strong air flow throughout.}

Each version of the bed mattress uses an assistance core of 13-gauge hourglass coils. These coils are crafted to make the mattress more resilient while permitting significant airflow through the bed mattress. The 11.5-inch version of the bed mattress uses a 4-inch layer of coils, while the 14.5-inch version uses a 7-inch layer. The base utilizes a.5-inch loft pad and a. 875-inch fiber pad to support the coil system. A foam encasement twists around the perimeter of the mattress to reinforce the edge.

Which mattress is better Saatva or Casper?

Mattress Type
Soft– 3 (Luxurious Soft alternative)/ Medium Firm– 6 (High-end Company choice)/ Company– 8 (Company choice).
Hybrid.
Construction.

Constructed of several layers that consist of polyfoam, memory foam, and two coil systems.

Cover Material:.

Knit Organic Cotton.

Comfort Layer:.
Plush Soft and Luxury Firm:.

Euro-Top with Sewn-In Material [1.25 ″ Soft Polyfoam,.75 ″ Fiber Fill, 1 oz. Dacron]
.625 ″ Polyfoam.

.375 ″ Memory Foam Lumbar Pad.

4 ″ Pocketed Coils (Foam-Encased, 14.5 Gauge).

Firm:.

Euro-Top with Sewn-In Material [1.5 ″ Polyfoam,.75 ″ Fiber Fill]
.625 ″ Polyfoam.

.375 ″ Memory Foam Lumbar Pad.

4 ″ Pocketed Coils (Foam-Encased, 14.5 Gauge).

Assistance Core:.

4 ″ or 7 ″ Hourglass Coils (13 Gauge).

.5 ″ Loft Pad and.875 ″ Fiber Pad.

Foam Border Encasing.

Mattress Prices and Sizing Saatva Mattress Wiki

Compared to similarly-constructed luxury hybrid designs, the Saatva Bed mattress is an affordable option. Buyers can pick in between 3 firmness choices and 2 height options at no extra charge. Is offered in all 6 basic bed mattress sizes.

Sizes Dimensions Height Weight Price
Twin 38″ x 75″ 11.5″ or 14.5″ 100 lbs. $799
Twin XL 38″ x 80″ 11.5″ or 14.5″ 105 lbs. $999
Full 54″ x 75″ 11.5″ or 14.5″ 110 lbs. $1,299
Queen 60″ x 80″ 11.5″ or 14.5″ 120 lbs. $1,399
King 76″ x 80″ 11.5″ or 14.5″ 145 lbs. $1,799
California King 72″ x 84″ 11.5″ or 14.5″ 145 lbs. $1,799
Split King 76″ x 80″ (2pcs.) 11.5″ or 14.5″ 145 lbs. $1,999
Split California King 72″ x 84″ (2pcs.) 11.5″ or 14.5″ 145 lbs. $1,999

What hotels use Saatva mattress?

Firmness and feel are two of the most important aspects of any bed mattress– let’s see how firm the Saatva bed mattress is and what it needs to feel like for typical weight, heavyweight, and light-weight sleepers.

How Firm Is The Saatva?

The Saatva mattress comes in three firmnesses– Plush Soft, High-end Firm, and Company — we evaluated the High-end Company variation, and it felt near to a 7/10 in regards to firmness. The pillow top is rather soft on top of it, however the two layers of coils underneath are on the firmer side; combined, they make the Saatva mattress feel simply a bit firmer-than-average.

We will state, the Plush Soft variation makes our list for the very best soft bed mattress, so if you’re searching for something soft, that’s the way to go. Is an excellent value that takes place to be both helpful and comfy at the same time. You can conserve $200 on a bed mattress merely by clicking the link below.

Is Saatva mattress a good mattress?

Back sleeping on the bed mattress, we are experiencing an exceptional balance of convenience and support, so our hips sink into the pillow top but not too far. Listed below that, we feel assistance from the bottom coil layer and a mix of support and contouring from the microcoil layer. The bed mattress likewise supplies an outstanding quantity of lumbar assistance, making it one of the best mattresses for lower back pain and sciatica. It is one of the best bed mattress for arthritis.

Saatva Mattress Wiki

When we are side sleeping, using us a good amount of pressure relief on our hips and shoulders, however we do think that those who sleep mainly on their side will choose the Luxurious Soft model. Saatva Mattress Wiki

Stomach sleeping, the is not a bad match at all; our hips do not sink in too far, and we are feeling strong overall assistance. As we will go over below, bigger stomach sleepers might need a firmer bed mattress and needs to think about the Company design. It could really be a good mattress for stomach sleepers.

 

Saatva Mattress Wiki 2021 Online Today | SWI

Looking for Saatva Mattress Wiki…

Founded in 2010, Saatva specializes in direct-to-consumer luxury mattresses under three brand: Saatva, Loom & Leaf, and Zenhaven. Between these 3 brand names, the business offers numerous mattress designs, consisting of the all-foam Loom & Leaf;& Leaf; the latex Zenhaven; the airbed, Solaire; and the hybrid

The Saatva Bed mattress, likewise called the Saatva Classic, integrates 2 layers of coils, 2 layers of polyfoam, and a thin layer of memory foam. in three firmness alternatives, which it calls Luxurious Soft, High-end Company, and Firm. These options represent soft (3 on the 10-point firmness scale where 10 is firmest), medium company (6 ), and company (8) respectively.

Readily available in two height alternatives: 11.5 inches and 14.5 inches. While the 11.5-inch version falls in the typical thickness range, the 14.5-inch option is prominent, so it may require much deeper sheets.

This review will go over the Mattress thorough. We’ll cover its construction, performance, sizing, rates, client evaluations, and company policies. We’ll likewise highlight how the various versions of the  mattress differ in efficiency and who each may be best for.

Select Plush Soft if …

You weigh under 130 pounds.
You choose greater motion seclusion.
You like a luxurious feel.

Choose Luxury Company if …

You weigh in between 130 and 230 pounds.
You sleep with a partner from a different weight group or with various position choices.
You choose a balance of adhering and assistance.

If …

You weigh over 130 pounds, select Company.
You prefer a firm feel.

Saatva Mattress Review Breakdown

The hybrid mattress that uses a combination of materials, consisting of a convenience layer with fiber fill, polyfoam, memory foam, and swiped coils in addition to a support group of hourglass coils.

It omes in 3 firmness alternatives and 2 height options. The firmness alternatives are Plush Soft (3 ), High-end Firm (6 ), and Firm (8 ). The height options are 11.5 inches and 14.5 inches.

A knit cover built of organic cotton enrobes the sleep surface area. This material enables air flow into the bed mattress while feeling soft to the touch.

All 3 firmness levels have comparable convenience systems that include a Euro-top with sewn-in cushioning. The Plush Soft and High-end Firm versions use 1.25 inches of soft polyfoam, while the Company version utilizes 1.5 inches of firm polyfoam. All of the firmness choices also include.75 inches of fiber fill and 1 ounce of Dacron to cushion the surface of the mattress.

Beneath the Euro-top, there is a.625-inch layer of polyfoam and a.375-inch layer of memory foam. This thin layer of memory foam supports the sleeper’s lumbar region to promote better spinal alignment. Next, a 4-inch layer of 14.5 gauge foam-encased coils adapts to the sleeper’s body while supporting strong air circulation throughout. This coil gauge is close to the middle of the variety, stabilizing responsiveness and contouring.|Underneath the Euro-top, there is a.625-inch layer of polyfoam and a.375-inch layer of memory foam. Next, a 4-inch layer of 14.5 gauge foam-encased coils changes to the sleeper’s body while supporting strong air circulation throughout.}

Each version of the mattress utilizes a support core of 13-gauge hourglass coils. These coils are crafted to make the mattress more durable while permitting substantial air flow through the bed mattress. The 11.5-inch version of the mattress uses a 4-inch layer of coils, while the 14.5-inch version uses a 7-inch layer. The base utilizes a.5-inch loft pad and a. 875-inch fiber pad to support the coil system. A foam encasement twists around the perimeter of the bed mattress to enhance the edge.

Which mattress is better Saatva or Casper?

Mattress Type
Soft– 3 (Plush Soft option)/ Medium Firm– 6 (Luxury Company option)/ Firm– 8 (Company choice).
Hybrid.
Construction.

Constructed of a number of layers that include polyfoam, memory foam, and 2 coil systems.

Cover Product:.

Knit Organic Cotton.

Comfort Layer:.
Luxurious Soft and Luxury Company:.

Euro-Top with Sewn-In Material [1.25 ″ Soft Polyfoam,.75 ″ Fiber Fill, 1 oz. Dacron]
.625 ″ Polyfoam.

.375 ″ Memory Foam Lumbar Pad.

4 ″ Pocketed Coils (Foam-Encased, 14.5 Gauge).

Firm:.

Euro-Top with Sewn-In Product [1.5 ″ Polyfoam,.75 ″ Fiber Fill]
.625 ″ Polyfoam.

.375 ″ Memory Foam Lumbar Pad.

4 ″ Pocketed Coils (Foam-Encased, 14.5 Gauge).

Support Core:.

4 ″ or 7 ″ Hourglass Coils (13 Gauge).

.5 ″ Loft Pad and.875 ″ Fiber Pad.

Foam Boundary Encasing.

Mattress Prices and Sizing Saatva Mattress Wiki

Compared to similarly-constructed luxury hybrid models, the Saatva Bed mattress is an economical option. Shoppers can pick between 3 firmness choices and 2 height alternatives at no additional charge. Is available in all 6 basic mattress sizes.

Sizes Dimensions Height Weight Price
Twin 38″ x 75″ 11.5″ or 14.5″ 100 lbs. $799
Twin XL 38″ x 80″ 11.5″ or 14.5″ 105 lbs. $999
Full 54″ x 75″ 11.5″ or 14.5″ 110 lbs. $1,299
Queen 60″ x 80″ 11.5″ or 14.5″ 120 lbs. $1,399
King 76″ x 80″ 11.5″ or 14.5″ 145 lbs. $1,799
California King 72″ x 84″ 11.5″ or 14.5″ 145 lbs. $1,799
Split King 76″ x 80″ (2pcs.) 11.5″ or 14.5″ 145 lbs. $1,999
Split California King 72″ x 84″ (2pcs.) 11.5″ or 14.5″ 145 lbs. $1,999

What hotels use Saatva mattress?

Firmness and feel are 2 of the most crucial aspects of any mattress– let’s see how firm the Saatva mattress is and what it must feel like for typical weight, heavyweight, and light-weight sleepers.

How Firm Is The Saatva?

The Saatva mattress can be found in 3 firmnesses– Luxurious Soft, High-end Firm, and Firm — we examined the High-end Firm version, and it felt close to a 7/10 in terms of firmness. The pillow top is rather soft on top of it, but the two layers of coils underneath are on the firmer side; combined, they make the Saatva mattress feel simply a bit firmer-than-average.

We will say, the Plush Soft variation makes our list for the best soft bed mattress, so if you’re trying to find something soft, that’s the method to go. Is an excellent worth that happens to be both helpful and comfy at the same time. You can save $200 on a mattress merely by clicking the link below.

Is Saatva mattress a good mattress?

Back sleeping on the mattress, we are experiencing an excellent balance of comfort and assistance, so our hips sink into the pillow top however not too far. The mattress also provides an outstanding amount of back support, making it one of the best bed mattress for lower back discomfort and sciatica.

Saatva Mattress Wiki

When we are side sleeping, using us a good quantity of pressure relief on our shoulders and hips, but we do think that those who sleep mainly on their side will prefer the Plush Soft design. Saatva Mattress Wiki

Stomach sleeping, the is not a bad match at all; our hips do not sink in too far, and we are feeling solid total support. As we will talk about below, larger stomach sleepers might require a firmer bed mattress and should consider the Company model. It could in fact be a great mattress for stomach sleepers.

 

saatva mattress wiki – Smart Work

“Is Saatva an excellent bed mattress?” is one of the most frequently asked questions… saatva mattress wiki in bed mattress evaluation forums. The very word this brand name is unknown to lots of people. When they go to purchase a brand-new bed mattress, I have actually likewise had numerous people ask me this question. I can offer my response in simply a moment.

To start with, let me explain why it’s not an excellent mattress. Mattresses are mainly utilized to supply comfortable sleeping. You may call it a kind of bed; however, this is in fact a misnomer given that bed mattress can not provide you a good night’s sleep. This is because of the springs that help you sleep.

It’s real that the majority of mattresses are made with excellent quality coils. What the majority of people do not understand, however, is that coil springs inside many bed mattress are prone to getting bent out of shape.

You get an excellent bed mattress by purchasing an old sutera foam mattress or by taking advantage of good sale offers on sutera bed mattress in Web stores. Another terrific method to get a great bed mattress is by asking expert mattress builders for suggestions and suggestions on the best type of mattress to get for your requirements.

The mattress is in fact made up of numerous layers and the innermost layer is called the “air layer”. Air supports the weight of the body therefore it offers a very comfortable sleeping condition. The “waffle layer” offers additional support for the back. There is the “memory foam” which “breathes” so that all these layers support each other, therefore providing for a very comfy sleeping condition.

saatva mattress wiki Frequently Asked

It does have some good bed mattress. If your main function of getting a good mattress is for back assistance, then a super flat leading mattress would be a much better option.

Saatva Mattress Wiki – SWI

The answer Saatva Mattress Wiki…In this short article we will attempt to understand why this mattress has actually been viewed as better than the Tempurpedic bed mattress. While both types of bed mattress deal excellent assistance, there are subtle distinctions between the 2 that make a difference when selecting a mattress for your back.

The most obvious distinction between the two is the firmness of the mattress. If you sleep on your back and have a lot of pressure put on your spine, the Saatva is the much better bed mattress because of its softer, more supportive feel.

Another distinction in between the two is the material on the mattress is made from. While most people think about memory foam when they hear the term Tempurpedic, there are in fact several different versions of this bed mattress product. The most well-known is Tempurpedic brand name memory foam, which has actually become nearly associated with the brand. It isn’t the only version readily available and there are numerous other variations. Lots of people choose the more natural memory foam feel and therefore the Sauna mattress might be the very best one for you.

There are numerous advantages to owning a good bed mattress such as durability and convenience. Both Tempurpedic and Sauna provide high quality mattresses and both use memory foam in their bed mattress. The original Sauna mattress was made from memory foam and has a credibility as being very comfortable. As for the Tempurpedic brand, it’s popular for its outstanding design and lots of customers delight in the distinct styling of these mattresses.

It all depends on how your specific back condition is and what you want from a mattress. If you have back pain or need some type of orthopedic support in order to feel more comfy, then a Tempurpedic mattress might be much better matched to your needs.

Everything boils down to your particular scenario. Selecting a Tempurpedic mattress may be much better if you have a particular type of back issue that requires some type of orthopedic support. If your back difficulty is less severe, then you’ll most likely do well with a Sauna mattress. Whichever one you select, you make sure to get a terrific night’s sleep if you purchase one that is right for your needs. Saatva Mattress Wiki