The 7 Best Knee Pillows for Side Sleepers (& Back Sleepers)

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

The best knee pillows, reviewed

Here are the best knee support pillows for side sleepers 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

Click on each of them to read the reviews o here to jump directly to our knee pillow guide.

1. ComfiLife Orthopedic Knee Pillow

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 the 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.

 

 

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 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

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.

 

 

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.

 

 

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

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.

 

 

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.

 

 

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

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.

 

 

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

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.

 

 

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

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.

 

 

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

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: 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 specialized cushion designed to be placed between the knees while you sleep. This innovative pillow is ergonomically crafted to fit comfortably between your legs, promoting ideal spinal alignment and support throughout the night. By keeping your knees separated, it helps maintain the natural curve of your spine, reducing pressure on your lower back and hips.

Knee pillows are especially beneficial for side sleepers, as they help prevent twisting and discomfort that can arise from improper leg positioning. However, they can also be used by back sleepers looking to alleviate strain on their spine and improve overall comfort. With various shapes and sizes available, knee pillows cater to individual preferences, making them a versatile and essential addition to your sleep routine. Whether you’re recovering from an injury or simply seeking a more restful night’s sleep, a knee pillow can enhance your comfort and support your body’s natural alignment.

How does a knee pillow help?

Knee pillows play a crucial role in aligning your legs, hips, and spine, which promotes proper posture while you sleep. By maintaining this alignment, the pillow helps improve circulation throughout your body, reducing the risk of numbness and discomfort. It effectively alleviates hip pain, knee pain, and joint pressure, providing targeted support that can be especially beneficial for those suffering from conditions like sciatica.

Additionally, an orthopedic pillow for the knees can help with other issues, such as restless legs syndrome, by promoting relaxation and comfort during the night. This results in a more restful sleep, allowing you to wake up feeling rejuvenated and ready to tackle the day. By investing in a knee pillow, you not only enhance your sleep quality but also contribute to your overall well-being, making it an essential tool for anyone seeking relief from discomfort or simply looking to improve their sleep experience.

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 yet comfortable, providing the perfect balance of support and softness. Its heat and weight responsiveness mean that the foam will mold to the contours of your legs, offering customized support that adapts to your body shape and movements. This unique property ensures that pressure points are alleviated, allowing for a more restful night’s sleep.

Additionally, memory foam’s ability to retain its shape means that it won’t flatten over time, providing lasting comfort and support. It also typically features a removable cover, making it easy to clean and maintain. Overall, memory foam knee pillows are a fantastic choice for those seeking to enhance their sleep quality and comfort while promoting better spinal alignment and reducing discomfort. More about memory foam here.

 

 

Why are they shaped like that?

The sinusoidal design of knee pillows is specifically engineered to ensure that your knees are comfortably separated at the right angle for proper alignment. This unique contour helps maintain the natural curvature of your spine, promoting optimal posture while you sleep. By creating a gentle slope, the design allows the pillow to fit snugly between your legs, providing support that adapts to your body’s movements throughout the night.

This ergonomic shape not only enhances comfort but also helps reduce strain on your hips and lower back. The thoughtful design addresses the common issues faced by side sleepers, ensuring that the pillow stays in place and effectively supports the knees, which can lead to improved circulation and reduced pain. Ultimately, the sinusoidal shape of a knee pillow is a crucial feature that contributes to a restful and rejuvenating sleep experience, making it an ideal choice for those seeking relief from discomfort.

Other uses

The contoured design of these pillows allows you to use them for more than just knee support; they can also serve as a stand for your chest while using a laptop or reading a book. This versatility makes knee pillows a multi-functional accessory that enhances your comfort in various situations. When propped against your body, the pillow provides a stable and supportive surface, reducing strain on your neck and shoulders as you work or read.

Keep in mind

Always consult with your physician before using a knee pillow for specific health conditions. While knee pillows can provide significant relief and support, it’s important to ensure that they are appropriate for your individual needs, especially if you have pre-existing medical conditions or injuries. A healthcare professional can offer personalized advice on how to use the pillow effectively and may recommend specific positions or techniques that best suit your situation. This precaution ensures that you receive the maximum benefits from the pillow while minimizing any potential discomfort or complications. Prioritizing your health and well-being is essential, so don’t hesitate to seek guidance from a qualified professional before making changes to your sleep or comfort routine.

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