The 7 Best Under Knee Pillow for Sleeping On Back

Knee pillows are invented to enhance one’s comfort while sleeping or resting on the back. A well-built knee pillow offers spinal alignment, relieves pressure, and eases pain related to the back, neck, thighs, and post injuries.

Although it is beneficial for everyone, side sleepers and pregnant women need to use these healing remedies regularly. By aligning the spine and hips, it improves side-sleeping position and insomnia issues.

People who are suffering from sciatica, bursitis, Restless Leg Syndrome, back pain, and pregnancy aches should take help from Knee Pillows. As per customer’s reviews of 2020, knee pillows are the best affordable option to soothe body pain, leading to healthier sleep.

Here in this review article, we will help you to explore more about knee pillows. We detailed a few factors to consider when purchasing the best one as well as review the best under knee pillow for sleeping on the Back.

Does Sleeping with a Pillow Under Your Knees Help Your Back?

Alignment is the key to good health. To keep your neck, hips, and spine aligned, knee pillows play an important role. Back sleepers always experience unbearable pain in the everyday morning. Because a spine imbalance was created by lying straight on the bed.

The best thing that a back sleeper can do is to place a pillow under their legs. It will regulate the pressure of your backside. Also, a knee pillow is helpful to maintain the regular curve of the user’s lower back.

Back sleepers should try wedges and a half-cylinder knee pillow, to prevent back pain. Hence, an effective knee pillow will improve the overall health condition of back sleepers.

The firmness of the knee pillow benefits users to achieve better alignment of the spine. Place a small knee pillow under your knee and see how it works like magic. It will reduce daily stress and offers strong support to hold the natural curve of the lower back.

Best Under Knee Pillow for Sleeping On Back

Under knee pillow is something that comes to your mind when thinking about sound sleep. You need the most comfortable one yet affordable. In this part of the review article, we detailed some of the top knee pillows on the market today for your benefits.

1. ComfiLife Orthopedic Knee Pillow for Sciatica Relief

An orthopedic Knee pillow from ComfiLife is designed to provide support to your spine as well as hips and legs. It is 100% portable and known to provides long-lasting comfort

ComfiLife Orthopedic Knee Pillow for Sciatica Relief



The whole pillow has been made with durable, high-density, heat-reactive memory foam. Due to its warm feel and contoured shape, the pillow is capable of relieving high stress and promoting improved blood circulation.

The materials of the pillow are so well-structured that they shouldn’t sag or deteriorate over time. The breathable zippered cover is machine washable and made with breathable polyester to circulate air. Also, it can alleviate heat circulation on your legs.

The 9.8 x 7.9 x 6.3 inches pillow is durable enough to increase a side sleeper’s comfort while sleeping. It is ergonomically designed to keep your legs, hip, and spine in an idyllic alignment and ease unbearable pain.

ComfiLife offers a lifetime money-back guarantee if users don’t experience the desired result. The weight of this knee pillow is 12 ounces but overweight people should avoid using them due to their small size.

  • Ergonomic shape and size
  • Breathable materials and cover
  • Reduce Back Pain and Sciatica
  • Easy to clean
  • Promote blood circulation
  • 100% money back guarantee
  • Small in size
  • Little bit Pricey

2. Half Moon Pillow for Leg Elevation, Ankle Knee Neck and Lumbar Support Bolster

Here is a half-moon pillow that goes right under your knees to offer a comfortable sleeping position by lifting the legs high. Half-moon pillows are the most common type of knee pillow that is shaped like a long roll cut in half.

Under Knee Pillow for Sleeping On Back

An effective one for back sleepers. Not only this, users can improve their body blood circulation by putting it under the ankles. This half-cylinder-shaped knee pillow is filled with memory foam. To enhance the comfort level of the users, makers made a carry-on-handle feature.

Its anti-slip Micro-bead texture is added to deliver a light massage remedy to tender and achy feet. Zipper system cover will help one to remove and clean the pillows easily. The sizing is so perfect that it will fit easily between two legs or underneath the thighs.

Though At first, it may be a little difficult to wash, and also there is no clear indication about how long it will last. But overall it is a powerful remedy to heal back and neck pain.

  • Machine washable and portable
  • Easy to remove and clean
  • Hassle-free cover
  • Impressive pregnancy support
  • Improve blood circulation
  • Too rigid to use
  • No cover replacement facility.

3. Half Moon Bolster Pillow – Knee Pillow for Back Pain Relief

Marinating proper body posture is not an easy task. Half Moon Bolster Pillow is manufactured to heal pain and enhance relaxation while you sleep. You can place this versatile pillow anywhere as per your sleeping position. 100% visco-elastic memory foam is used to structure Half Moon Bolster Pillow.

Half Moon Bolster Pillow - Knee Pillow for Back Pain Relief

Users can use this as a leg elevator, a knee pillow, or a wedge. Also, helps to ease the pains related to pregnancy. Surprisingly, allegorical people can also use this as it is a hypo-allergenic product. Breathable covers are included to confirm long-lasting support and comfort.

Due to its multiple nature and features, doctors recommend it to have healing support in several areas of the body. It also can be used in numerous post-surgical recoveries such as hip replacement, arthritic knees, poor spine alignment, and knee surgery.

It can reduce varicose veins while improving blood circulation on the body. Since it is rigid one might experience a little bit of hassle to compress at first use. 

  • Ergonomic shape
  • Multipurpose pillow
  • Long-lasting comfort
  • Reliable for multiple use
  • 100% memory foam
  • Perfect medical remedy
  • Zipper might create problem
  • Too hard

4. Leg Elevation Pillow – with Full Memory Foam Top, High-Density Leg Rest Elevating Foam Wedge

If you want a perfect sleeping aid then grab a leg elevation pillow. Alleviating legs to improve blood circulation is the major task of this high-Density foamed pillow. Its advanced memory foam layer is included to relieve back, hip, and knee pain.

Leg Elevation Pillow - with Full Memory Foam Top, High-Density Leg Rest Elevating Foam Wedge

The whole measurement is 24″ x 21″ x 8″, which is perfect to have a relaxing night of sleep as well as a short daylight snooze. All you need to do is to elevate the legs for 6 to 12 inches, and it will help you to conquer spine alignment. Ligaments and muscles will get stronger day by day if one uses them regularly.

What’s more, it is designed to retain the expected body shape of every user. Breathable materials and covers can help one to improve edema, heal insomnia and reduce swelling.

Although the materials are breathable, they can get full of fuzz after washing it inaccurately. So, remove and clean them carefully. Apart from this, it is an excellent and beneficial option to improve the whole body’s well-being.

  • High-density foams
  • Non-toxic materials
  • Premium construction
  • Attractive plus grey cover
  • Immense health benefits
  • Machine washable
  • Hard upper layer
  • Not applicable for short people

5. LightEase Post-Surgery Leg, Knee, Ankle Elevation Double Wedge Pillow

If you want me to recommend a must-have leg pillow then Light Ease leg pillow. The sole intention to manufacture this incredible pillow is to heal surgical pains and provide support for leg and knee joints. It is a simple, effective, and fail-proof magic solution to alleviate pains.

LightEase Post-Surgery Leg, Knee, Ankle Elevation Double Wedge Pillow

LightEase pillow will help users to elevate two legs in parallel to reduce back, hip, leg, or knee pain. It also helps in relieving stress on the lower body. You don’t have to roll the pillow to use. All you need to do is to place the legs gently on the pillow.

Finished with premium high-density memory foam to offer great support and comfort for the user’s legs. Also, it is strong enough for multiple uses. The dual handle feature will help you to position and carry the pillow without any hassle.

The place to keep the legs is a little bit narrow. So overweight and fatty people should buy a larger size of this pillow. So you can say, overall it is a perfect pillow to comfort leg fatigue, soreness and remove tiredness.

  • Versatile and comfy
  • Dual handle feature
  • Reliable for long time use
  • Easy to use and carry
  • Improve blood circulation
  • Machine washable cover
  • Too narrow
  • Complicated features

6. BulbHead Ramp Must-Have Elevating Rest Relieves Leg, Hip and Knee Pain

Are you suffering from knee or leg pains? Then without wasting any time, try the BulbHead Ramp pillow. This comfortable leg wedge pillow offers quick relief from leg swelling and pain. Adults of 50 plus aged people should consider this to reduce foot Swelling.

Under Knee Pillow for Sleeping On Back

This giant leg lifter is known to improve blood circulation by stimulating blood flow. It will provide equal support as a knee pillow, wedge pillow, support pillow, and back pain pillow. Needless to say, it is very different from other foam wedge pillows.

Customer satisfaction is BulbHead Ramp’s top priority. Hence they offer responsive customer service for 24 hours. The most amazing feature of the product is its included air pump to inflate Leg Ram. That means when you don’t need to use it you can store it effortlessly.

A major drawback is that it takes a lot of time to inflate the leg lifter. Sometimes it becomes frustrating. Otherwise, it is a lightweight leg pillow to relax and relieve cramps, hip pain, back pain, and more!

  • Portable and lightweight
  • Immediate pain relief
  • Easy to use and store
  • Inflatable Wedge Pillow
  • Attractive design
  • Impressive customer service
  • Irrespirable cover
  • Too big to compress

7. The Angle by Back Support Systems | Memory Foam Bed Wedge Leg Pillow for Back Pain

Back pain is one of the biggest obstacles in our daily life activities. Angle Memory Foam Wedge Pillow is the most powerful remedy to get relief from back pain. As per medical reviews, this wedge Pillow is proved to cause discomfort of lower back pain due to numerous illnesses.

The Angle by Back Support Systems | Memory Foam Bed Wedge Leg Pillow for Back Pain

It is available in three different sizes. That means every size and height people can use it to get immediate back pain relief. People who suffer from muscle spasms, strain, tension, fatigue, daily stress, back and body pains should try it once.

By decompressing on the backside, you can reduce pressure on muscles and discs. Furthermore, it will help users to hold the physical integrity of the spine. Its “Be Cool technology” feature is added to absorb and release energy. Therefore it delivers an ideal sleep temperature for an improved night’s sleep.

What’s more, this is environmentally safe and medically certified. Bamboo zippered cover will help one to use and remove it easily. Wedge and design are quite backdated. Apart from this, this hypoallergenic wedge pillow is the immediate solution for back and neck pain.

  • Versatile and relaxing
  • Eco-friendly leg lifter
  • Bamboo zippered cover
  • Made from premium memory foam
  • Immediate solution for lower back problems
  • 5-year warranty
  • Non ergonomic design
  • Poor quality

Features to Look Before Buying Under Knee Pillow for Sleeping On Back (Buying Guide)

Without some specific consideration, a knee pillow can become incompatible and useless for you. The right amount of information and careful consideration of your product can save you time. Also, it will help you to purchase the best knee pillow on the market.


One of the important considerations is to check the shape of the knee pillow. Basically, knee pillows come in four different shapes; Body pillows, half-moon, wedge, and hourglass. They are designed to fit comfortably between a person’s legs. Some knee pillows are specially designed to place nicely between a person’s thighs or calves.

Some knee pillows also formed like cylinders and wedges. Back sleepers should put these pillows under their knees while sleeping. But you should choose the proper one for you from the variables considering your height and weight and also according to your sleeping style. 

Firmness level

To find out which pillow is best for you, first of all, you need to know if the firmness of the pillow is adequate for you or not. Although, companies mention the firmness rating with each product. Since most of the knee pillows available in the marketplaces range from medium to firm, you have to order considering your knee pressing level which fluctuates according to your weight. Remember, these pillows are not to compress tightly while you sleep, instead of compressing might ruin your comfort. Reading customer reviews from different brands of knee pillows will help you to choose the best-firmed knee pillow for you.


A knee pillow is known for providing ultimate support to align your body with the neck.  The amount of support from the knee pillow completely depends on the thickness and firmness of your chosen pillow.

Therefore, to get the best support, overweight people should select a firm knee pillow. On the other hand, lightweight knee pillows are best for thinner people.

Bearable weight

Weight plays an important role in terms of knee pillows. The weight you put on knee pillows can distort or tear them over time. So, make sure the condition of the pillow is well-enough to bear your body weight. On the other hand, weight of a knee pillow is equally important for your comfort. Knee pillow used between the knees usually weighs more than 1 (one) pound while pillows used under the knees found around 2 pounds or heavier. It’s not a matter of whether it is lightweight or heavier, finding the perfect support and comfort should be the main consideration while using knee pillows.


A well-designed knee pillow is designed with a core support layer. On the upper side, there is a softer layer of cushioning. Because most of the knee pillows are made with soft memory foam to soothe your body heat. Also, it is helpful to outline the specific shape of the body.

Eminence Materials

As we already know, knee pillows are made with memory foam and breathable fabrics. In case you have orthopedic issues, make sure it provides sound sleeping and comfort to the specific area of issue. Also, make sure your selected knee pillow functions with high-density memory foam. Look for the fabric that promotes good airflow. As some manufactures use the cooling gel inside, better consult with specialists whether they are good for your body or not. But sadly very few manufacturers share memory foam details with the product. Here you can take help from customer reviews to determine the product quality.

Temperature regulation

Last but not least, you should check how warm the pillow becomes in receiving human body heat. Knee pillows that can control the temperature are usually cold. Maximum knee pillows are designed with memory foam to trap heat. Some brands’ knee pillow covers are made of chilling fabrics to stabilize this propensity.

FAQs – Frequently Asked Questions

Do knee pillows really work?

Does knee pillow work? Is it effective? Well, it is essential and effective for people who suffered from neck and back pain. The sleeping position plays an important role in improving your spinal postures.

A proper knee pillow will save you from body stiffness and neck pain.  People who deal with back discomfort, pregnancy distress, and restless leg syndrome should try knee pillows.

How thick should a knee pillow be?

An orthopedic pillow is designed to offer an ideal amount of space to fit under your knees. Although, you find knee pillows of different sizes and shapes. All you need to do is choose the size of the knee pillow according to your sleeping position.

Also, the thickness of the knee pillow depends on your weight. A pillow is usually 4-7 inches thick. But if you are overweight you should prefer a heavier pillow to use.

Is there a knee pillow for yoga or exercise?

Yes, different types of pillows are available for yoga or exercise. Knee pillows are proven to help people to align their body posture correctly while doing exercise. An adjustable knee pillow will prevent hip, knee, or lower back pain while doing yoga or exercise.

Should your shoulders be on your pillow?

No, you can’t place a knee pillow under your shoulder.  The major purpose to use these pillows is to get full support on the head and neck. When you place a knee pillow under the shoulder, it creates an imbalance between your neck and head. Therefore you have to stay awake the whole night with a sore neck.

See More: Best Pillow For Neck And Shoulder Pain – Top 11 Choice

Where do you place a knee pillow?

How to sleep with a knee pillow completely depends on your sleeping patterns and positions. These types of pillow will allow you to put anywhere you want. Side sleeper can place it between two legs to enjoy a night of uninterrupted sleep. Back sleepers will feel much better if they put the pillow under each knee of them.

How long do knee pillows last?

A well-structured knee pillow lasts a long time. Different pillow company websites claim that it will last for about 18 months. As per customer reviews, a branded knee pillow will last one year without any damages. Some complaints about hygiene issues. But washable and hypoallergenic knee pillows are more hygienic than the traditional ones.

Final Recap

If you are still unsure about which pillow is best suited for you, then try our recommended products. Also analyze your needs and expectations before purchasing a knee pillow. Make sure the knee pillow is accurate according to your weight.

Do doctors recommend knee pillows? Yes, of course. As per medical knee pillow reviews, it is one powerful home remedy to eliminate pain related to the legs, back, neck, bones, and pregnancy periods.

Is it worth your investment? According to my fruitful research on numerous customer reviews, it is clear that knee pillows are a useful accessory to have a relaxing night’s sleep and a less painful morning.

We end our reviews here. Have a healthy night of sleep with the best knee pillow!

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