The 8 best pillows for side sleepers of 2023

Pros: Fully adjustable to fit all types of sleepers; made with high quality, safety-certified materials; exceptionally supportive and comfortable; generous return policy 

Cons: Washing and drying can be time consuming 

The Coop Original pillow has consistently impressed us over years of testing, making it not only the best pillow for side sleepers, but the best pillow we've tested overall. It meets all the criteria that side sleepers need in a pillow: it provides excellent support, and offers full adjustability to cater to each individual's unique anatomy. 

Upon arrival, it comes with enough fill for side sleepers to try as-is, along with a little bag of extra fill in case you need more support. Should the loft feel too high or too low, simply remove or add filling to achieve the perfect level of support and firmness.

The Coop Original is my absolute favorite as a side sleeper. It combines comfort, support, full adjustability, plus it holds Greenguard Gold and CertiPUR-US certifications. Additionally, the brand offers a 100-day refund policy, so you can test it out before deciding if it's right for you. 

Coop recommends washing the full pillow at least once a year. I've found that drying Coop pillows can be a bit of a challenging task. It takes a couple of hours on a low tumble dry and multiple cycles to ensure the entire pillow, including the core, is completely dry. Fortunately, the outer cover is easy to wash for more regular maintenance. 

This pillow caters to all types of sleepers, whether your preferred sleeping position is on your back, stomach or side. It ensures proper spinal alignment and provides necessary support to alleviate back and neck discomfort. Several members of our team have not only tested but also held on to and loved sleeping on this pillow for years. So it's no surprise that it is once again our top choice for the best overall for side sleepers and my ultimate favorite pillow. 

Read our full Coop Sleep Goods Original Pillow review.

Pros: An excellent pillow for the prices; provides great support from the core; soft, plush exterior

Cons: Not fully adjustable, prone to clumping, daily fluffing is required 

The Casper Original pillow has a unique double layer design that offers great balance between support and comfort at a relatively affordable price. Its down alternative fill has a luxurious airy softness, making it perfect for snuggling. The inner core offers good support while the outer shell provides a plush and cozy feel. 

This pillow has the ideal medium loft for side sleepers, featuring a gusset that enhances its shape and ensures the support that side sleepers need to maintain proper spinal alignment. It's designed with a breathable cotton cover that keeps sleepers cool and comfortable through the night, the percale weave makes it feel luxurious and crisp. Cleaning the pillow is a breeze as both layers can be easily washed on a gentle cycle.

The Casper pillow has a removable layer but I do not consider this pillow 100% adjustable. Removing that layer would significantly reduce the loft, support, and alignment that are crucial for side sleepers. Over time this pillow may develop clumps and lumps and Casper recommends a daily fluffing routine which can become somewhat time consuming.

As a side sleeper, my experience with the Casper Original pillow was pleasant. You'll love it if you prefer a soft, plush feel. Casper offers a 30 night  trial and full refund if you decide the pillow isn't for you.

Read our full Casper Original Pillow review.

Pros: Effective in reducing neck pain and promoting spinal alignment, designed specifically for side sleepers 

Cons: Less suitable for side sleepers who occasionally shift to sleeping on their stomach, slightly on the pricier side

The Eli & Elm Cotton Side Sleeper pillow earned our top spot in this category for its effectiveness in reducing neck pain and encouraging proper spinal alignment, plus it is crafted specifically for side sleepers. The ergonomic pillow features a band around it to maintain its shape and loft. The result is a supportive foundation that alleviates excessive pressure on the shoulders without creating too much elevation of the head, and it's also 100% adjustable.

The Eli & Elm Cotton Side Sleeper pillow did a great job at alleviating my neck and shoulder tension, especially after a strenuous workout. While other pillows performed decently in this category, the Eli & Elm (alongside the Coop), stood out by providing the best muscle tension relief. This can be attributed to the pillow's unique ergonomic shape, particularly the curved center that cradles the head and neck and reduces pressure on the shoulders. In my opinion, it lived up to its promises by encouraging good spinal alignment and reducing discomfort in the neck, shoulders and back.

Its adjustable fill is made from a combination of natural latex noodles and polyester fibers that give it a cooling effect. It also includes a removable cover made from smooth cotton, blended with ultra-fine polyester and spandex. All materials are breathable and prevent heat retention effectively. 

Individuals who prefer traditional, non-shaped pillows might need some time to get used to the Eli & Elm pillow and I wouldn't recommend it to side sleepers who also switch to sleeping on their stomach during the night, as it does not provide adequate head and neck support in that position. This pillow is on the pricier side, but it could be a worthwhile investment. Fortunately, Eli & Elm offers a 45-day return policy so you can try it before committing.

Pros: Crafted with cutting-edge cooling tech and high-quality temperature regulating materials, great trial period

Cons: May need an extended adjustment period due to its non-traditional design, lacks the plush feel of a regular pillow

Among the pillows I tested, the Purple Harmony definitely stands out in terms of cooling. Its airflow capabilities consistently kept me cool through the night, making it an ideal choice for side sleepers who tend to sleep hot. The soft and cushiony talalay latex core, combined with the fresh mesh cover gives it an overall feeling of lightness and airiness that is incredibly comfortable.

This pillow does a remarkable job at staying cool and maintains a refreshing feel though the night, it is admittedly one of the best cooling pillows I've ever tested. The cooling effect is due to the combination of the tempered-neutral airy grid, ventilated latex, and moisture-wicking materials engineered to provide good temperature regulation. It does require a period of adjustment due to its distinctive build and materials, but it ultimately delivers excellent alignment and support. 

You can select from three lofts: low, medium, or tall. Purple suggests the medium-height pillow for side and combination sleepers as well as those with medium to larger frames. It provided adequate support for me, but side sleepers with larger frames may find the tall pillow more suitable. 

Ironically, my personal concern with the Purple Harmony stems from its high level of innovation. It doesn't offer the familiar comfort of a soft, plush traditional pillow that I prefer, so it's not ideal for those who like to cuddle with their pillows. While the innovative engineering and cushioning technology are impressive, it may not be the best choice for those who favor a more conventional pillow. Shifting positions can also result in a noticeable bounce through the pillow, which may be disruptive to some.

Purple offers a 100-night trial period which in this case is extra valuable since it may take some time to get used to. It's worth considering if you're a side sleeper who frequently experiences overheating and a solid option for those who haven't slept comfortably on traditional pillows.

Pros: Soft, marshmallow-like feel, sufficient support and loft for side sleepers, year-long return policy

Cons: May not be optimal for larger individuals, retains some heat throughout the night

After testing various down pillows for this review, I found the Brooklinen Down Pillow to be the most impressive. It offers an outstanding blend of loft, support, and firmness that side sleepers seek. This pillow truly has a luxurious, marshmallow-like feel unlike any other. It comes in three firmness options: plush, mid-plush, and firm. Brooklinen specifically recommends the firm option for side sleepers, as it provides the most loft. 

The ample loft ensured proper alignment, reduced shoulder pressure, and comfortably conformed to my head and neck. I especially love its flexibility; down pillows typically have a more plush, adaptable feel, and this one combines that with sufficient, lofty support. I found that it strikes a balance between malleability and sturdiness, which side sleepers will appreciate.

Down pillows have a tendency to trap heat, which may not be the best option for people looking for a cooling pillow. However, this pillow features a 100% cotton sateen cover that not only enhances its luxurious feel but also promotes breathability. 

Although this pillow is supportive, it still feels very soft and plush. Individuals with larger body frames may find it slightly less ideal as the added weight could potentially cause the pillow to compress more, resulting in reduced loft and insufficient support for side sleeping. 

Down pillows, including this one, are not machine washable; they can only be spot or dry cleaned. I strongly advise using a good cover on all pillows, especially this one. With proper care, a down pillow can last for a couple of years. Over time it may lose its loft due to the natural breakdown of the down clusters. To prevent lumps, it's best to regularly fluff and knead the pillow.

Pros: Hypoallergenic and eco-friendly, bouncy and responsive

Cons: Not adjustable, slightly denser than other options

While a less common material for pillows, latex offers incredible support for those that like a dense and firm pillow. As far as latex pillows go, the Brooklyn Bedding pillow is a fantastic choice. Constructed from entirely 100% Talalay latex, it is hypoallergenic and eco-friendly. Compared to other types of latex, Talalay is naturally more breathable, ensuring a cooler and more comfortable night's sleep.The strategically designed airways within the pillow effectively dissipate heat to further enhance temperature regulation. 

The Brooklyn Bedding Talalay latex pillow has lively and responsive qualities that I really enjoyed. Even though it's not particularly malleable (since it's an entire solid block of latex foam), I was pleasantly surprised by its softness and bounciness. It also offers excellent support: it consistently conforms to the neck and head, relieving pressure points and reducing neck tension.

Unlike other pillows, there's no need to fluff this one, it remains free from lumps or flattening. Regardless of how much it's scruched or rolled, it always retains its shape. While it's not adjustable, you have the option to choose between two lofts (low or high). 

The pillow insert itself can only be spot, cleaned, so you'll need a good pillow case to protect it. However, it does come with a machine-washable cover that can be easily removed.

Pros: Adjustable, CertiPUR-US certified foam, hypoallergenic Tencel cover, 100-night sleep trial

Cons: Some clumping and lumping over time

The Helix Shredded Memory Foam Pillow is specifically designed for side sleepers, with an ideal medium loft. The pillowcase is made from Tencel fibers, which are incredibly smooth at the micro-level, resulting in extra softness for ultimate comfort. 

This pillow offers the right balance of softness for proper head and spine alignment, with a medium-firm feel. Its consistent and sturdy support is suitable even for side sleepers with larger body frames. The king-size pillow is especially beneficial for those with broader shoulders, as it offers additional support for the head and neck. Plus, it's customizable to suit your preferences; thanks to a zipper located on one side, you have the option to adjust the loft and firmness by adding or removing fill to your liking. 

The foam fill is CertiPUR-US certified, guaranteeing the absence of any harmful chemicals. The removable cover is also hypoallergenic and machine washable. Like our other top picks, it comes with a generous sleep trial: you have 100 nights to determine if it's the right pillow for you.

I found that this pillow is very responsive and maintains its shape without going flat. That said, I experienced some lumpiness and clumps in certain areas of the pillow due to its shredded memory foam components. A simple fluffing quickly restored it to its original shape.

Pros: Adjustable, soft, excellent support

Cons: Washing and drying the pillow is time-consuming, not a replacement for a regular pillow

It comes as no surprise that the same brand behind our favorite pillow also offers a great body pillow option. The Coop Body Pillow provides consistent body support, reducing strain and promoting spinal alignment when placed between the legs and knees. Its ample width and length allows for easy shaping and bending, perfectly accommodating any body frame. It alleviates hip and knee pressure, ensuring a comfortable position for side sleepers. It's also earned the top spot in our guide to the best body pillow. 

The flexibility and moldability it offers are outstanding. The Coop body pillow also has the soft and cozy sensation perfect for snuggling that I personally love. All Coop pillows, including the body pillow, hold Greenguard Gold and CertiPUR-US certifications, guaranteeing a safe sleeping experience. The removable hypoallergenic pillowcase resists dust mites and is easily washable. It is also breathable thanks to the use of polyester and bamboo-derived viscose rayon, keeping it cool through the night.

While Coop recommends using a commercial washer and dryer due to the pillow's size, I've managed to wash the pillow insert at home twice over the past few years. However, it's worth noting that the drying process takes significantly longer, requiring approximately three long cycles for it to completely dry to the core.

After owning this pillow for over two years, I'm happy to report that it continues to maintain its shape despite nightly use. It remains free of lumps and has not gone flat. Giving it an occasional fluff helps keep it in top shape.

Selecting the perfect pillow is a highly individual decision, but for side sleepers, it's crucial to focus on key factors such as spinal alignment, head support, and overall comfort to ensure a good night's sleep. Here are the primary essential components side sleepers should keep in mind when choosing a pillow:

Loft and adjustability

Side sleepers should opt for a medium to high loft pillow to properly bridge the gap between their head and the mattress. This gap will be different from person-to-person, so we recommend opting for a pillow with adjustable fill. 

Alignment

Hayden told us that good sleeping posture helps prevent stress points that may aggravate joints and connective tissue. A quality pillow should offer excellent support for the head and shoulders, ensuring proper spinal alignment while alleviating shoulder pressure without excessive head elevation. 

"I coach my patients to sleep on their side with a body pillow," said Hayden. "This keeps the spine straight and aligned. A pillow under the head should be just high enough to keep the head level with the mattress. The upper arm and upper knee are to be supported by the body pillow to keep the spine straight while you sleep."

Firmness

Selecting the right pillow firmness is a matter of personal preference, but most side sleepers prefer a medium-firm feel and our picks reflect that. Your pillow should be firm enough to maintain proper spinal alignment, but not so firm that it causes discomfort or morning headaches. A good pillow should contour comfortably to the head and neck. 

Materials/fill

The choice of pillow fill and materials can impact support, comfort, breathability and maintenance. Some fills are hypoallergenic, offer improved breathability, and varying levels of support. When opting for foam fill, check that it's CertiPUR-US certified for quality assurance.

Temperature regulation

Side sleepers who tend to get hot during the night should opt for a breathable pillow designed to regulate temperature. Some pillows even feature advanced technologies to dissipate body heat effectively. 

Return policy/trial period

We recommend only considering pillows that allow you to return the product if you find it's not for you. Side sleepers may need to try multiple options to find the perfect fit, and you should give yourself at least a week to adjust to sleeping on a new pillow.

As a certified sleep science consultant with years of experience in sleep research and product reviews, I know first hand the significance of a well-equipped bedroom for a comfortable and healthy night's sleep. To delve deeper into what makes the best pillow for side sleepers, we consulted experts like Robert Hayden, DC, PhD founder of the The Iris City Chiropractic Center and Nishi Bhopal, MD,, a board certified psychiatrist and sleep specialist. Using their recommendations, I conducted a comprehensive assessment by testing more than 20 of the best pillows on the market, evaluating the following key factors:

• Sleeping: I slept on each pillow for seven consecutive nights, assessing factors like sleep quality, comfort, temperature regulation, support, and spinal alignment to provide insights on each pillow.
• Materials and certifications: I noted each pillow's materials, looking for qualities like hypoallergenic properties, breathability, certifications (such as CertiPUR-US), and maintenance requirements. 
• Cleaning: Pillows inevitably accumulate body oils, sweat, and dead skin, so cleaning is crucial to proper sleep hygiene. I followed cleaning instructions for each pillow and assessed washing and drying difficulty. 
• Shape retention: I examined each pillow for lumps or clumping after use, noting how often they required fluffing and whether they maintained their shape and loft. This is particularly important for side-sleepers who rely on consistent support.
• Return policy/trial period: I also investigated the return policy and warranty for each pillow, as no single pillow suit's everyone needs.

What kind of pillow should side sleepers use?

According to Nishi and Hayden, side sleepers should opt for a pillow that supports the head, neck and spine alignment which will help prevent stress points that may aggravate joints and connective tissue. Hayden also suggests placing a pillow between the knees to help maintain a neutral spine position. 

Should a side sleeper have a soft or hard pillow?

Side sleepers should use a pillow that is on the firmer side. Generally a medium-firm or firm pillow is best, said Nishi.

Do side sleepers need thicker pillows?

Nishi does not recommend pillows that are too thick or tall because they can tilt the head out of alignment with the spine. The pillow should be thick enough to fill the space between the head and neck.

What type of pillow is best for side sleepers with shoulder pain?

Using a U-shaped design can help take some of the pressure off the neck and shoulders while keeping the spine aligned, says Nishi. Additionally, Hayden recommends choosing a pillow that supports the distance between the shoulder and head. If the pillow is too thin, your head and shoulder are crunched together. If the pillow is too thick, your head is bumped up, straining the alignment of your neck.