Last updated on April 13th, 2020

  • Knee pillows are commonly used by side sleepers and pregnant women for additional comfort between the legs.
  • Some of the benefits of using a knee pillow are: reduced snoring, ease of lower, back, hips and knee pain, and increased circulation.
  • There are different types like hourglass, strap-on, bosler/wedge and long knee pillows.
  • What is the best knee pillow? Comfilife Orthopedic is an ergonomic and high-density pillow that reduces sciatica, back and hip pain — with over 8,000 predominantly positive reviews on Amazon.

Best Knee Pillows


If you wake up with a sore back and hips, there is a simple solution. The Mayo Clinic recommends the use of a pillow to reduce back pain for side sleepers. By adding a “spacer” between the knees, the back and hips are naturally realigned to the proper position. Knee pillows are a natural choice because of its size and comfort.

But don’t just grab an extra bed pillow, it will just keep sliding around all night, become condensed and even result in more pain: tossing and turning during the night to find out your homemade knee pillow won’t help you get better sleep. The best solution is to find a specialized knee pillow designed to comfortably remain in place and provide the proper support throughout the entire night.

Editor's Choice
ComfiLife Orthopedic Knee Pillow for Sciatica Relief, Back...
Best High End
Cushy Form Knee Pillow for Side Sleepers - Sciatic Nerve...
Everlasting Comfort Memory Foam Knee Pillow with Adjustable...
[Replacement Cover] Half-Moon Bolster Replacement Cover -...
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Cushy Cloud Orthopedic Memory Foam Knee Pillow Perfect Pain...

The Best Knee Pillows 

ComfiLife Orthopedic

This hourglass knee pillow is made from premium high-density memory foam to shape to your body and provide all-night comfort. With an ergonomically design, the ComfiLife knee pillow provides relief from sciatica, back pain, hip stiffness, knee pain and joint discomfort by keeping your spine properly aligned. The reduction of lower back pressure results in a full night’s sleep without tossing and turning.  


  • Maximum support and comfort for side sleepers
  • Memory foam will not go flat throughout the night
  • Contour fits nicely between your knees or thighs
  • Breathable cover is machine washable


  • Can shift during the night
  • Memory foam is temperature sensitive and may be harder or softer depending on  room temperature

Cushy Form Premium

With a traditional hourglass knee pillow shape, the Cushy Form Premium Therapeutic Knee Pillow is designed for comfort. This memory foam knee pillow is compact, yet sized correctly to fit the majority of side sleepers. A convenient carrying case keeps this pillow with you when you travel.


  • Comfortable support at the upper knee to reduce pain and pressure throughout the night
  • Designed to fit all sizes of legs
  • High-quality memory foam holds up well over time
  • Breathable, zippered cover is removable for easy washing
  • Convenient travel bag with handle keeps pillow clean when not in use


  • Can shift during the night
  • Temperature sensitive memory foam may be harder or softer depending on room temperature

Everlasting Comfort

This addition of a strap to this comfortable hourglass knee pillow eliminates waking up to search for your knee pillow during the night. You simply strap the pillow to one leg and rest easy knowing it will remain in place. The removable and adjustable strap secures easily with a hook and loop closure.  


  • Stays in place during the night
  • 100% memory foam support
  • Removable, adjustable strap gives a customized fit
  • Breathable cover is removable for easy machine washing


  • Temperature sensitive memory foam may soften during the night
  • May not correctly fit larger legs

Cushy Form Half-Moon Bolster

For the sleeper who can’t decide which position is best, the Cushy Form Half-Moon Bolster Knee Pillow provides the best of both worlds. When on your back, this knee pillow can be tucked under your knees as a leg elevator. Side sleepers can easily insert the bolster between their legs for a comfortable side sleeping knee pillow. At 20 ½ inches in length, it is large enough to be flexible, yet small enough to be easily maneuvered during the night.  


  • Flexible use perfect for sleepers who change positions during the night
  • Reduces pressure on the lower back in both back and side sleeping positions
  • Dual-layer memory foam quickly adjusts to changes in sleeping position
  • 100% cotton cover is soft, breathable and machine washable


  • Larger than a traditional hourglass knee pillow
  • Can be difficult to maneuver under covers

Cushy Cloud Orthopedic

Made from 100% medical-grade memory foam, the Cushy Cloud Knee Pillow provides the perfect amount of support for side sleepers. With a slightly larger design, the Cushy Cloud provides firm support for larger sleepers. The supportive memory foam slightly conforms to your legs to provide soft support without feeling like you have a block between your legs. The soft, fluffy velboa cover feels luxurious, but it is still removable and machine washable.  


  • Can reduce back and joint pain quickly by providing proper support
  • 100% medical-grade memory foam provides quality support night after night
  • Remains cool during the night
  • Easily removable cover is machine washable


  • May be too large for small-framed sleepers
  • Too stiff for some users

Why Use a Knee Pillow?

There are many benefits to sleeping on your side with a high-quality knee pillow, including:

  • Reduced Snoring: Sleeping on your side helps to open your airways for better breathing during the night.
  • Less Pain: Sleeping with a properly placed knee pillow relieves stress on your lower back, hips, knees and ankles by keeping your spine in the proper alignment.
  • Increased Brain Power: You need the proper amount of sleep to function at your best. Finding a comfortable position allows you to sleep soundly without tossing and turning. Studies also reveal that sleeping on your side may increase the efficiency of your glymphatic system for improved brain functioning.
  • Strong Heart: Sleeping on your left side helps promote healthy blood flow to your heart. Side sleeping with a knee pillow can promote proper circulation during the night.
  • Healthy Pregnancy: During pregnancy, a woman should sleep on her left side to maintain a healthy blood flow to mom’s heart and to the baby. Using a knee pillow keeps you comfortably on your side and reduces the strain of pregnancy on the back and hips.
  • Doctor Recommended: Doctors recommend side sleeping with a knee pillow for increased circulation and to relieve pressure after back or hip surgery. With recovery time after surgery often resulting in more time in bed, protecting the back and joints from damage is especially important.

Types of Knee Pillows

The compact size of specialized knee pillows is a large advantage over using a full body pillow or a traditional bed pillow as a substitute. You aren’t filling your bed with a large, invasive object, much to the disapproval of your sleeping partner. Although sleeping pillows come in a variety of shapes and sizes, most are discreet and fit within three categories:

  1. Hourglass Knee Pillows – With a distinctly hourglass shape, this form of knee pillow easily contours to your body and stays in place between your knees. The size and shape allow you to place the pillow exactly where you need for the best comfort.
  2. Strap-On Knee Pillows – Longer than most hourglass versions, the strap-on knee pillow is designed to stay in place during the night. A strap attaches to your leg, keeping the pillow in place. You can place the pillow in various position along your leg to find the best sleeping position. The longer shape gives more support between your legs during the night but may make night movement a bit more difficult.
  3. Bolster/Wedge – Bolster or wedge leg pillows are ideal for those who switch between side sleeping and back sleeping. Although the bolster is a round half-moon shape and the wedge is triangular, both shapes perform the same function. This style of leg pillow can be placed between the knees for side sleeping or under the knees for back sleeping.
  4. Long Knee Pillow – Although long knee pillows could provide increased support to your lower body, they could prevent you from turning over during your sleep. However, these are perfect for you if you want to cradle your entire body along with the knees.

Who Should Use a Knee Pillow?

Preferences vary by sleeper, but the following people tend to feel most comfortable using knee pillows:

  • Side sleepers: Many side sleepers are prone to have their legs and knees bump into each other and make contact at night. They can also experience discomfort with one leg resting on the other. Knee pillows form a cushioning barrier that keeps them apart.
  • Back sleepers: A knee pillow can effectively diminish the lower back tension by relaxing the legs. Additionally, it can improve your legs’ blood circulation as the pillow elevates your lower body, which leads to a better alignment.
  • Pregnant women: they may enjoy a knee pillow to give their body some much-needed support. The American Pregnancy Association recommends pregnant women sleep on their sides, and while it is a popular position, it’s not always comfortable if you’re pregnant. Knee pillows can reduce the pressure build-up in your achy limbs and ease any inevitable back pain.
  • People with back or knee pain: Keeping the legs and knees aligned can alleviate discomfort for people with back pain. The same is true of people who experience knee pain due to injuries or bodily stress.
  • People with restless legs syndrome: Known as RLS, restless legs syndrome is a medical condition characterized by painful sensations in the legs, particularly while lying in bed. RLS can cause people to move their legs excessively during the night. Knee pillows provide extra stability that helps prevent legs from moving around too much. Models with knee straps can be particularly beneficial for people with RLS.
  • People who had a recent surgery: Many people who have recently been discharged may experience discomfort and pain that prevents them from sleeping properly. A knee pillow aims at aligning the bone structure for more comfort and pain relief.

Tips to Choosing the Right Knee Pillow

With so many options in the market, how do you choose a high-quality pillow that perfectly fits your sleeping needs? Here is a list of considerations when shopping for a knee pillow:


Memory foam provides both support and comfort. As the foam warms, it shapes perfectly to your legs. Both hypoallergenic and durable, a quality memory foam knee pillow will perform well for several years.


No one wants to sleep with a hard wedge between their knees. Look for medium support to provide a mix of both support and comfort. Most high-quality memory foam knee pillows with temperature sensitivities will provide support while softening just the right amount for comfort.


The perfect size depends on your body. Most experts recommend a knee pillow that offers 4 to 6 inches of separation. Small-framed users should shop for smaller sizes. Larger body types require more support and should use a larger, firmer knee pillow during the night.


Sound sleepers that rarely toss and turn don’t need to strap on a knee pillow. The contoured shape of an hourglass knee pillow will generally remain in place during the night. However, sleepers who move and adjust during the night may benefit from a pillow that straps onto the leg. With one simple strap, you reduce the hassle of searching for your knee pillow. Those who adjust position from side to back will get more use from a bolster/wedge style knee pillow. The flexibility of this style of leg pillow provides comfort in any position.


Memory foam is known for sleeping hot. The density of the foam can trap heat and create a sweaty situation. The key to avoiding a hot sleeping experience is all in the cover. Breathable, soft covers help reduce the ability of memory foam to hold heat during the night. You should choose a knee pillow with a high-quality, removable cover for easy cleaning, durability and cool performance.

Return Policy & Warranty

Some knee pillows come with sleep trials, but it’s not that common. Most companies will offer a satisfaction guarantee, letting you return the pillow for a refund at any time– however, if they offer a guarantee like this, it’s probably in place of a warranty.


Best Knee Pillows 2020 1

Back, hip, knee and leg pain can not only make sleep difficult, but it can also affect the quality of your daytime hours. Knee pillows provide simple and cost effective relieve to both restless nights and joint pain. In fact, they give you more than just pain relief. Choosing a high-quality knee pillow will help realign your entire body for better sleep, better support and better health.

–> See Editor’s Choice For Best Knee Pillow

More Pillow Resources

If you are interested in learning more about different pillow materials and pillow options for different sleepers, feel free to read these resources: