The 7 Best Knee Pillows for Side Sleepers [2020 Edition]

Here's our guide to the best knee pillows for side sleepers. They'll help you keep your legs, hips, and spine aligned.

Woman sleeping on her side
Bottom Line icon Here's the bottom line:
⭐ TOP CHOICE – 5 Stars United Knee Pillow for side sleepers
💎 VALUE CHOICE – The ComfiLife Knee Pillow
💸 BUDGET CHOICE – The Ziraki Wedge Knee Pillow
 

My old cotton knee pillow finally gave up on me, so I’ve been looking for a new one to replace it. This time I decided to upgrade to a memory foam pillow and, since I’ve already done the research, I thought I would share it with the world:

The best knee pillows, reviewed

Here are my favorite under knee pillows based on features, specifications, and user reviews:

  1. ComfiLife Knee Pillow
  2. Everlasting Comfort Knee Pillow
  3. 5 Stars United Knee Pillow for Side Sleepers
  4. ABCO Memory Foam Knee Pillow
  5. Cushy Form Knee Pillow for Side Sleepers
  6. Ziraki Wedge Contour Knee Pillow
  7. Prime Athletics Orthopedic Knee Pillow

1. ComfiLife Orthopedic Knee Pillow

✅ 100% high-density memory foam

✅ Ergonomic design

✅ Breathable cover

✅ Cover can be machine-washed

If you browse a bit through our website, you will quickly learn that ComfiLife is a brand that features quite a bit in our articles. That’s because, in our experience, it offers a wide variety of quality products at very reasonable prices. When it comes to ComfiLife Knee Pillow, that also rings true.

The size: 9.8 x 7.9 x 6.3 inches. Weighs 12 ounces.

The shape: As you can see in the picture above (and as is the case with every pillow in this list, since it’s one of the reasons we chose them), this pillow has an ergonomic design to keep your legs, hips, and spine aligned.

 

Knee Pillows are designed tp help keep legs, hips, and sipe aligned

 

The materials: The ComfiLife orthopedic knee pillow is made with 100% high-density memory foam. What does that mean? Firstly, it means that it will be very comfortable. Secondly, like every other pillow or cushion made of memory foam, it will react to body and environmental temperature. When it’s cold it will get firmer, and when it’s warm it will be softer and adapt to your body’s contours.

  • Will it go flat over time? That has to do with the quality of the memory foam. In this case, since the pillow is made with premium high-density memory foam, it shouldn’t go flat over time.

 

The knee pillow cover can be zippered off and machine-washed

 

The cover: The ComfiLife knee pillow is encased in a breathable cover that ensures the pillow won’t get to warm when using it.

  • Can I wash the cover? Yes. The cover can be zippered off and you can machine-wash it.

The warranty: According to the product page on Amazon, as of the time this article was published, if you’re not 100% satisfied with the product, you’ll get your money back no questions asked.

2. Everlasting Comfort Knee Pillow with Ear Plugs

✅ 100% memory foam with no additives

✅ Ergonomic design

✅ Adjustable strap

✅ Cover can be machine-washed

Like ComfiLife, Everlasting Comfort is yet another heavyweight brand in the health & comfort category. What I like most about them is that they care about the little details. In this case, they have equipped their Comfort Knee Pillow with a strap to ensure it stays in place during the night. Also included? A free pair of earplugs so nothing comes between us and a good night’s sleep.

The size: 10.5 x 6 x 8 inches. Weighs 1.35 pounds.

The shape: The orthopedic contour is designed to keep your knees separated and align your legs, hips, and spine.

The materials: The Everlasting Comfort Knee Pillow is made of 100% pure memory foam with no additives.

 

Equipped with a removable and adjustable strap that keeps the pillow from moving while sleeping

 

The strap: As you can see in the picture above, this knee cushion is equipped with a removable and adjustable strap.

  • Why is it useful? The strap will keep the pillow in place during the night.
    • Of course, this feature is not for everybody. I don’t like it, because I don’t like the feeling, but for a lot of people, it’s very, very useful. The great thing about this particular knee pillow is that the strap can be removed, so if you try sleeping with it on and end up not liking it, just take it off and it won’t bother you again.

The warranty: This product comes with a lifetime replacement guarantee, which means that, if anything happens, they will send you a new one for free.

 

Comes with 2 pairs of memory foam earplugs with a noise reduction rating of 33

 

Something extra: One more thing! the Everlasting Comfort comes with two pairs of memory foam earplugs with a noise reduction rating (NRR) of 33.

3. 5 Stars United Knee Pillow for Side Sleepers

✅ Ergonomic design

✅ 100% high-density memory foam

✅ Infused with a light lemon aroma

✅ Hypoallergenic and anti-pilling cover

✅ Removable and machine-washable cover

5 Stars United is a company with 10 years of experience making lumbar cushions. They are also ISO 9001:2000-certified (a set of international standards that ensure their products meet quality and customer requirements); and CertiPUR-US certified. This program confirms the environmental, health, and safety properties of all their memory foam products.

The size: 9.8 x 7.8 x 6.2 inches.

The shape: As you can see in the pic above, it’s ergonomically designed to keep legs, hips, and spine aligned.

 

Infused with a light lemon aroma to ensure a feeling of freshness and comfort

 

The materials: This pillow is made of 100% high-density memory foam with a –and this is what I love the most about it– a light lemon aroma infused into the material during the production process to ensure a feeling of freshness and comfort. Outstanding move.

The cover: The 5 Stars United Knee Pillow for Side Sleepers comes with a hypoallergenic and breathable anti-pilling case, which is also temperature non-sensitive.

  • Can I wash it? Yes. It’s removable and machine-washable at a warm temperature.

 

Comes with an hypoallergenic, non-temperature sensitive, anti-pilling case

 

The warranty: 100% money-back satisfaction guarantee.

Keep in mind: The pillow comes vacuum packed, so you will need to air it out for 48 hours before using it. This is quite common for memory foam goods like pillows or bean bags.

4. ABCO Memory Foam Knee Pillow

✅ 100% Visco memory foam

✅ Ergonomic design

✅ Hypoallergenic

✅ Includes a travel bag

Looking for a hypoallergenic pillow with an easily removable and washable cover? You will love the ABCO Memory Foam Knee Pillow.

The size: 10 x 8 x 6 inches.

The design: Ergonomically contoured to keep legs, hips, and spine aligned. The knee separation is 2.75 inches.

The materials: Made of 100% viscoelastic memory foam. This material is soft enough to feel comfortable between your legs while at the same time being stiff enough to keep your knees properly supported and aligned.

  • According to the manufacturer, the material is also hypoallergenic.

 

Includes a travel bag for easy transportation and storage

 

The cover: Comes with a removable and machine-washable cover that can be easily zippered off.

  • It also includes a carrying case for easy transportation.

The warranty: 100% risk-free satisfaction guarantee.

5. Cushy Form Knee Pillow for Side Sleepers

✅ 100% Visco memory foam.

✅ Contoured design.

✅ Breathable and machine-washable cover.

✅ Includes a travel bag.

 

I have included the Cushy Form Knee Pillow on the list for those who are looking for a slightly less contoured pillow that provides a bit more knee separation.

The size: 10 x 8 x 5 inches. Weighs 14.4 ounces.

The design: Still ergonomically contoured, but the curves are less pronounced compared to other knee pillows.

 

Slightly less contoured pillow; provides a bit more knee separation

 

The materials: 100% visco-elastic memory foam.

The cover: Comes with a breathable (for temperature control) cover that can be removed and machine-washed.

  • Includes a travel bag.

The warranty: 100% money-back guarantee.

6. Ziraki Wedge Contour Knee Pillow

✅ Affordable

✅ Contoured design

✅ 100% memory foam

✅ Removable and machine-washable cover

 

Ziraki. Yet another recurring brand in our reviews. Their strongest suit are their prices, which are consistently quite affordable in all of their products.

The dimensions: 9.8 x 7 x 6 inches. Weighs 9.6 ounces.

The shape: If you’re looking for a cushion that provides slightly less knee separation, the Ziraki Wedge Knee Pillow is the one for you.

 

One of the most affordable knee pillows

 

The materials: Made with premium quality, 100% memory foam. This means it won’t flatten over time (although body warmth will make it soften).

The cover: Comes with an easily removable cover that’s also machine-washable.

The warranty: 100% satisfaction guaranteed.

7. Prime Athletics Orthopedic Knee Pillow

✅ Ergonomic design

✅ 100% Visco memory foam

✅ Cotton cover

✅ Removable and machine-washable cover

✅ Includes a travel bag

 

The Prime Athletics Orthopedic Knee Pillow pretty much has it all. Let’s see: memory foam? Check. Hypoallergenic? Check. Strap? Travel bag? Cotton cover? Check, check, and check. Take a look:

The size: 10.25 x 8 x 6 inches. Weighs 1.15 pounds.

The shape: Ergonomic contour design to keep your legs, hips, and spine aligned.

The materials: Made with hypoallergenic 100% visco-elastic high-density memory foam.

 

The cover has a hidden (to prevent contact with the skin) zipper which makes it easy to remove and machine-wash

 

The cover: The cover is made of cotton and includes an adjustable strap to keep it from wiggling during the night if you roll over or change positions.

  • Can I wash it? Yes. The cover has a hidden (to prevent contact with the skin) zipper which makes it easy to remove and machine-wash.
  • It also includes a travel bag.

Knee Pillow Buying Guide

What is a knee pillow?

A knee pillow is a cushion ergonomically designed to fit comfortably between your legs and provide ideal spinal alignment and support when you sleep.

How does a knee pillow help?

It aligns your legs, hips, and spine and helps improve circulation and reduce hip pain, knee pain, joint pressure or sciatica. It also helps with other issues like restless legs syndrome.

What are knee pillows made of?

They can be made out of a plethora of materials: cotton, memory foam, gel… Each material has its pros and cons, but this article focuses on memory foam knee pillows.

Memory foam is an excellent material for these cushions because it’s firm, comfortable, and heat and weight responsive, which means it will mold to the contour of your legs.

 

Memory foam reacts to exterior temperature

 

Why are they shaped like that?

The sinusoidal design ensures that your knees will be comfortably separated at the right angle for proper alignment.

Other uses

The contoured design of these pillows allows you to also use them as a stand for the chest while using a laptop of book reading.

Keep in mind

Always consult with your physician before using a knee pillow for specific health conditions.

Last updated on February, 2020.