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Best Knee Pillows – Top Picks and Buyer’s Guide

Written by Keith Cushner

Quick Overview

Many people sleep with a pillow between their knees for added comfort. This is particularly true for side sleepers, who often need a pillow for optimal spinal alignment, as well as pregnant women of people with chronic back pain. Pillows can also provide a cushioning buffer that prevents knee joints from rubbing together, which can lead to aches and pains for some.

For some sleepers, any pillow between the knees provides sufficient comfort and support. However, specialty knee pillows that are shaped to match natural contours of the sleeper’s body tend to be most effective. Most knee pillows are either hourglass shaped and intended to be sandwiched between both knees, or wedge shaped and primarily used by back sleepers below the knees. Most specialty knee pillows sold today are made from memory foam.

This guide will look at knee pillow designs and options for sleepers, as well as tips for first-time buyers. Below you’ll find our list of the top knee pillows that are currently available for purchase. Our picks are based on verified customer and owner experiences, as well as intensive product research and analysis.

Best Knee Pillows

The Best Knee Pillows

Best Overall Coop Home Goods Knee Pillow

Best Overall –  Coop Home Goods Knee Pillow

Highlights

  • Firm feel
  • Solid memory foam composition
  • Adjustable loft with insert
  • Breathable cover material

Best Overall Coop Home Goods Knee Pillow

coophomegoods.com

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The Coop Home Goods Knee Pillow is one of our standout picks for a few reasons. For one, the pillow is constructed from solid high-density memory foam that offers long-lasting support and shape retention. It is also firm enough to improve spinal alignment and reduce back pain for most side sleepers regardless of their body weight.

Unlike other memory foam pillows, this model shouldn’t absorb too much body heat, and this is thanks to a cover made of breathable viscose from bamboo. The cover can be unzipped and laundered in any household machine for convenient cleaning. The pillow also offers adjustable loft thanks to a 1-inch insert, allowing you to choose between a height of 7 or 8 inches. The foam, which is hypoallergenic, is also CertiPUR-US certified, meaning it does not contain ozone depleters, mercury, lead, and other harmful substances.

Coop Home Goods offers a 100-night sleep trial and a five-year warranty for the pillow. The pillow’s sticker price is also very reasonable compared to many of its competitors, and shipping is free for all U.S. orders.

Good for:

  • Side sleepers who prefer a firm knee pillow
  • Those who tend to sleep hot with foam pillows
  • People with back pain
  • Value seekers

Best for Side and Back SleepersThe Company Store Knee and Leg Posture Pillow

Best for Side and Back Sleepers – The Company Store Knee and Leg Posture Pillow

Highlights

  • Medium feel
  • Very moldable and snuggly
  • Alleviates lumbar and pelvic pain
  • 90-night sleep trial

Best for Side and Back SleepersThe Company Store Knee and Leg Posture Pillow

thecompanystore.com

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Many knee pillows are constructed from solid high-density foam, making them quite firm but not particularly moldable. The Knee and Leg Posture Pillow from The Company Store is a bit different. The fill consists of shredded polyfoam that gives the pillow a relatively soft feel and makes it quite snuggly. The pillow is thick enough to alleviate aches and pains for side sleepers while also providing adequate elevation and ergonomic comfort for back sleepers.

The Knee and Leg Posture Pillow is also relatively easy to clean. Thanks to a cotton shell, the entire pillow can be washed and dried in any household machine. The cotton also retains a minimal amount of body heat, so owners shouldn’t experience uncomfortable warmth. The Company Store offers the pillow at a reasonable price-point, and free shipping is available for all orders within the contiguous U.S. The pillow can be returned within 90 days of the original purchase, even if it has been used and/or laundered.

Good for:

  • People who prefer softer knee pillows
  • Those with lower back or pelvic pain
  • Hot sleepers
  • Value seekers

Best Pressure ReliefLuna Orthopedic Knee Pillow

Best Pressure Relief – Luna Orthopedic Knee Pillow

Highlights

  • Firm feel
  • Solid memory foam construction
  • Contoured shape for optimal comfort
  • Alleviates sciatica and lower back/hip pain

Best Pressure ReliefLuna Orthopedic Knee Pillow

lunablanket.com

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Affordable and effective at reducing aches and pains, the Luna Orthopedic Knee Pillow is composed of solid memory foam. Due to its firm feel and contoured shape, the pillow should promote even alignment and reduce pressure for most side sleepers regardless of their body type. It can also alleviate sciatica and other types of lower back and hip pain, and improve blood flow for people with poor circulation. The high-density foam also holds up well over time, allowing owners to use the pillow for years before a replacement is needed.

The cover can be removed and washed in any household machine, but the foam never needs to be cleaned. Compared to other similarly constructed knee pillows, this model’s sticker price is very approachable. Luna also offers customers the option to bundle their purchase with one of the company’s weighted blankets and receive a discount on both items. Shipping is free for all 50 states.

Good for:

  • Side sleepers
  • Those who prefer a firm knee pillow
  • People with sciatica and other types of lower back/hip pain
  • Value seekers

Best Memory Foam Aeris Knee Pillow

Best Memory Foam –  Aeris Knee Pillow

Highlights

  • Memory foam fill
  • Textured, hypoallergenic bamboo cover
  • Breathable comfort layer
  • Lemon-scented aroma
  • Removable, machine-washable cover
  • Free shipping on orders over $25 within the contiguous U.S.
  • Money-back guarantee for sciatica joint and hip pain relief
Click below to get the best price on the Aeris Knee Pillow.
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Best Memory Foam Aeris Knee Pillow

amazon.com

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Our editor’s choice for best knee pillow, the Aeris is a quality memory foam pillow with a thoughtful design and size. The rectangular pillow features a dip in the middle that cradles the knees, helping promote proper alignment of spine, legs, and hips. The Aeris pillow’s smaller size makes it easier to reposition as needed during the night. As an added bonus, the Aeris pillow is treated with a special manufacturing process that eliminates off-gassing odors associated with traditional memory foam and releases instead a soothing lemon scent.

Good for:

  • Side sleepers
  • Sleepers suffering from sciatica joint and hip pain
  • Pregnant women
  • Sleepers who are sensitive to the smell of memory foam

Best Knee Pillows Buyer's Guide

Many people find that sleeping with a pillow between their knees helps reduce pain and pressure, as well as improve circulation in both legs. Knee pillows are most popular with side sleepers, although back sleepers may place them beneath both knees for better support and comfort. Pregnant women and people with back or knee pain may also benefit from using them. Knee pillows come in a wide range of shapes and designs to accommodate sleepers with different preferences, and some models come with knee straps that help keep the legs in place. Most knee pillows are available for $30 or less.

This guide will look at some of the most common designs for knee pillows, as well as people who benefit from using them, tips for first-time buyers, and our picks for the best knee pillows sold today.

Common Designs and Features of Knee Pillows

Dimensions for knee pillows vary by brand and model. Most measure roughly 10 inches wide, and between four and six inches thick. They are also much lighter than primary sleeping pillows. The average knee pillow weighs one pound or less.

Common shapes for knee pillows include the following:

  • Hourglass: This is the most common shape for knee pillows, as well as the cheapest option in most cases. The hourglass contouring aligns with the natural curvature of your knees for added comfort, which holds both legs in place throughout the night.
  • Wedge: Wedge pillows have a triangular or half-moon shape, and are most suitable for back sleepers when placed beneath the knees. However, many side sleepers find they are sufficiently comfortable as well.
  • Body: Body pillows are exceptionally wide, and designed to run the length of an adult’s figure. Some people tuck body pillows between their legs, which can result in less pressure on the back and less friction between the knees and legs. Body pillows are not necessarily designed to fit between the knees, but many people utilize them for this purpose. To learn more, check out our Best Body Pillows guide.

Knee pillows are usually made of memory foam or polyfoam, which may be one piece or shredded and contained in a case. They typically have a cover made from cotton or synthetic fibers, such as polyester and/or rayon. Most knee pillows are Medium Firm or Firm. This prevents the knees from compressing the pillow too much, which can reduce support and comfort.

Some knee pillows come with removable knee straps. These straps wrap around the knees to help the legs remain in place throughout the night.

Who Should Use a Knee Pillow?

Knee pillows reduce pressure in the back and hips, and also help alleviate tension in the hamstrings and calves. Preferences vary by sleeper, but the following people tend to feel most comfortable using knee pillows:

  • Side sleepers: Many side sleepers experience discomfort with one leg resting on the other, as well as chafing and rubbing when the knees make contact. Knee pillows form a thick, cushioning barrier that keeps the legs apart.
  • Back sleepers: While sleeping with a pillow between the knees may not be suitable for back sleepers, many find that sleeping with a pillow below both knees relieves tension and alleviates pressure. This also elevates the lower body, which can help with alignment and improve blood circulation in the legs. For this reason, knee pillows can be especially beneficial for back sleepers with poor circulation.
  • Pregnant women: For many pregnant women, sleeping with a pillow between their knees reduces pressure in the hips and pelvis that occurs as their bellies widen. Knee pillows also help pregnant women who have poor spinal alignment due to back problems related to their size.
  • 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.

Some stomach sleepers may reduce discomfort by sleeping with a knee pillow between their knees, but a standard sleeping pillow may also accomplish the same goal. When stomach sleepers place a pillow beneath their knees, it can elevate the lower body to an angle that creates uneven support. Therefore, a knee pillow may not be suitable for stomach sleepers.

Important Considerations for Knee Pillow Shoppers

When shopping for a new knee pillow and comparing brands and models, here are a few factors to consider:

  • How much do you weigh? Use your weight as a guide for the thickness of your knee pillow. As a general rule of thumb, heavier people tend to prefer thicker knee pillows while lighter people feel more comfortable with thinner pillows.
  • Are you pregnant? Hourglass-shaped or straight pillows tend to be the best choice for side sleepers, and most pregnant women sleep on their sides to reduce the strain of carrying excess weight around their midsection. However, a second wedge pillow placed behind the knees can provide extra support as well.
  • Do you sleep hot? Most knee pillows sold today are made of foam, which tends to absorb more body heat than other materials. This may be an issue for people who naturally sleep hot, although the excess warmth is usually isolated to the knees and legs, which may not be as problematic for some. The pillow cover may also indicate how hot the pillow sleeps, since cotton tends to sleep cooler than synthetic fibers.
  • Do your legs move around when you sleep? Hourglass-shaped knee pillows are designed to keep the legs in place to some extent — but if you tend to kick or shift your legs frequently during the night, then a model with a removable strap may be the best option.
  • What is the pillow’s return policy? Alternatively, some pillow manufacturers offer a satisfaction guarantee that allows returns and refunds at any point. If a satisfaction guarantee is available, then the pillow most likely won’t come with a warranty.

Pricing, Warranty, and Return Policy

  • When in the market for a knee pillow, pricing, warranty, and return policy are all important factors to consider.
    • Pricing: For a quality knee pillow, expect to pay between $25 and $30. The most common factor that influences knee pillow pricing is often material, followed by size, durability, and brand reputation.
    • Return policy & warranty: Some knee pillows offer sleep trials, which allow customers to test out the pillow for a certain period and — if they are dissatisfied — return the product for a refund before the trial period ends. Sleep trials can be an effective way to try out different products without committing to a purchase.

    Note that although certain manufacturers offer return policies with their knee pillows, others may not due to hygienic reasons. However, a quality knee pillow should come with a warranty against manufacturer defects that lasts between one year and a lifetime.

Can I Use a Regular Pillow as a Knee Pillow?

Knee pillows may be specially designed with the proper density, shape, and feel to maximize benefits like reducing hip strain and dissuading you from sleeping on your back. However, if you prefer to use a traditional pillow as a knee pillow, we recommend a dense memory foam pillow. Memory foam models with high densities generally are the most similar in construction and feel to knee pillows.

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