Eli & Elm’s documented strength is a side sleeper pillow with a distinctive U-shaped curve that makes room for your shoulder. Sleep Foundation named the Eli & Elm Cotton Side-Sleeper Pillow its most comfortable pillow for side sleepers, giving it an 8.9 out of 10 test lab score. Its senior product expert said he was skeptical of the U-shape at first, but the space around his shoulder helped keep his neck and body aligned, and the adjustable loft was crucial for him. PureWow named it the best curved pillow and said it tied with Sleep Number for top marks among the curved pillows its editors tested.
The pillow’s design centers on comfort and customization. Mattress Clarity says the interior liner holds polyester fiber and shredded latex, with the fiber adding plush softness and the latex keeping it bouncy and responsive. Retail listings describe the fill as 75% latex and 25% polyester fiber, and you can unzip it to add or remove fill for your preferred height. Sleep Advisor notes OEKO-TEX certification, meaning it has been tested for harmful substances. Mattress Clarity lists the standard pillow at $119.99, or $134.99 with a matching pillowcase, and a deals listing notes a five-year manufacturer warranty.
The pillow has a huge customer following. NBC Select reports it averages 4.5 stars from more than 49,000 Amazon reviews and that Eli & Elm offers a 30-day return policy. Woman & Home’s tester called it one of the best pillows she has ever slept on. The Gadgeteer’s reviewer, who was trying to train herself to sleep on her side, said she was getting ready to buy several more for her family. Mattress Clarity scored it 4.3 out of 5, as did Sleepopolis.
The honest caveat: Eli & Elm is a premium-priced pillow with a specialized shape. PureWow lists it as somewhat pricey and heavy. Mattress Clarity says it isn’t a good fit for budget shoppers, stomach sleepers or people who prefer a traditional rectangular pillow, and notes some Amazon reviewers complain about the shape. Because it’s designed for dedicated side sleepers, people who switch positions often may find it awkward. Eli & Elm has no Trustpilot reviews, so customer feedback comes mainly from Amazon and tester reviews.
Quick Highlights
✅ Sleep Foundation’s most comfortable side sleeper pillow (8.9/10)
✅ PureWow’s best curved pillow
✅ U-shaped cutout for the shoulder
✅ Adjustable loft with removable fill
✅ Shredded latex and polyester fiber blend
✅ Bouncy, responsive feel, per Mattress Clarity
✅ OEKO-TEX certified, per Sleep Advisor
✅ 4.5 stars from 49,000+ Amazon reviews, per NBC Select
✅ Breathable cotton cover, per Mattress Clarity
✅ Machine-washable cover, per Woman & Home
✅ 30-day return policy, per NBC Select
✅ Five-year warranty, per a retailer listing
❌ Premium price, about $120 for a standard pillow
❌ Heavy, per PureWow
❌ Not for stomach sleepers, per Mattress Clarity
❌ Unusual shape some dislike, per Mattress Clarity
❌ Less suited to combination sleepers
❌ Matching pillowcase costs extra
❌ No Trustpilot reviews
Why Trust This Review
This review draws on testing from Sleep Foundation, PureWow, Mattress Clarity, Sleep Advisor, Sleepopolis, Woman & Home, The Gadgeteer and Hunker, plus NBC Select’s summary of Amazon ratings. Eli & Elm has no Trustpilot reviews, so customer quotes come from testers and are clearly labeled. Some testers received free products.
Sleep health note: Pillow loft and shape affect neck and shoulder alignment. If you have chronic neck pain or a shoulder injury, consult a doctor or physical therapist. Latex is used in the fill, so people with latex allergies should check with Eli & Elm before buying. GlossGirly has no commercial relationship with Eli & Elm that affects this verdict.
Full Review Breakdown
Design: The U-Shaped Shoulder Cutout
Eli & Elm’s defining feature is a curved cutout on the bottom edge where your shoulder rests. Sleep Foundation explains that this U-curve gives side sleepers space for their shoulder, which helps keep the neck in line with the spine. Its tester was initially skeptical but found it genuinely helped his alignment. PureWow praised how it curves around the shoulder.
This shape solves a common side sleeper problem, where a regular pillow pushes the shoulder up or forces the head out of alignment. The Gadgeteer’s reviewer said the pillow is designed to position you, and keep you, on your side. That makes it especially helpful for people trying to train themselves into side sleeping.
Fill, Feel and Adjustability
Inside, Eli & Elm uses a blend of shredded latex and polyester fiber. Mattress Clarity says the fiber gives a plush softness while the latex noodles make the pillow bouncy and responsive. You can unzip the outer case and liner to add or remove fill, so you can tailor the height to your shoulder width and preferences.
This adjustability is a major advantage. Sleep Foundation’s tester, who needs a lot of loft, said the adjustable fill was crucial for him. Sleepopolis also highlights adjustable fill as a key feature. Heavier fill makes the pillow firmer and taller, while removing some creates a softer, lower feel.
Comfort, Cooling and Materials
Testers consistently rank Eli & Elm among the most comfortable side sleeper pillows. Woman & Home’s tester called it one of the best pillows she has ever slept on, and Hunker included it in its testing of 27 popular pillows. Mattress Clarity says the breathable cotton cover and shredded fill allow airflow, so it doesn’t trap much heat.
Sleep Advisor notes OEKO-TEX certification for harmful substances. The cotton cover is removable and machine washable, and Woman & Home said Eli & Elm provides clear, practical cleaning instructions. Because the fill includes latex, anyone with a latex allergy should confirm suitability first.
Price, Policies and Who It Suits
Mattress Clarity lists the standard pillow at $119.99 and $134.99 with a matching pillowcase, and Eli & Elm regularly runs sales. NBC Select notes a 30-day return policy, and a retailer listing mentions a five-year warranty. PureWow lists the price and weight as drawbacks.
It’s best for dedicated side sleepers. Mattress Clarity says stomach sleepers, budget shoppers and fans of traditional rectangular pillows may prefer another option, such as the Coop Eden. PureWow notes curved pillows suit people who rarely switch to their back or stomach during the night.
Best Products Worth Buying
Eli & Elm’s flagship pillow, with a U-shaped shoulder cutout, adjustable shredded latex and fiber fill, and a breathable cotton cover. Sleep Foundation named it the most comfortable side sleeper pillow with an 8.9 out of 10 score, and PureWow called it the best curved pillow. It averages 4.5 stars from more than 49,000 Amazon reviews, per NBC Select. Best for dedicated side sleepers with neck or shoulder discomfort. Trade-offs: it’s heavy, premium-priced and not designed for stomach sleepers.
Value is a recurring theme. One couple said they wanted mid-century dining chairs for a live-edge table but weren’t willing to spend over $400 per chair, and found what they needed at Mid In Mod. Living Cozy notes the brand’s focus on accessible pricing, and one customer said price alone was a great reason to buy.
The same pillow bundled with a custom-fitted pillowcase shaped for the U-curve, which protects the pillow and keeps the fit neat. Standard rectangular pillowcases don’t fit the curved shape well, so the matching case is a practical add-on. Best for buyers who want a complete, ready-to-use setup and easier cleaning. Trade-offs: it adds about $15, and color options may be limited.
Woman & Home lists queen and king size options for the side sleeper pillow, useful for wider beds or people who like more surface area. The larger size gives more room to move while staying on your side. Best for broad-shouldered sleepers or anyone with a king bed. Trade-offs: larger sizes cost more and weigh more.
Because the pillow’s fill is adjustable, keeping the fill topped up or replacing the cover helps it last. Removing or adding latex and fiber lets you fine-tune loft as the pillow settles over time. Best for long-term owners who want to maintain the original feel. Trade-offs: check availability and pricing with Eli & Elm directly.
What Customers Actually Think
Note: Eli & Elm has no Trustpilot reviews. The quotes below come from hands-on testers, clearly attributed.
“the space it created around my shoulder really did help keep my neck and body aligned” — Jeremy Klein, Sleep Foundation Senior Product Expert (Cotton Side-Sleeper Pillow)
“I’m getting ready to buy several more of these for the family.” — The Gadgeteer reviewer (Side Sleeper Pillow)
“one of the best pillows I’ve ever slept on” — Woman & Home tester (Side Sleeper Pillow)
“As a lifelong side sleeper, I couldn’t wait to try the Eli & Elm pillow” — Hunker tester (Cotton Side Sleeper Pillow)
“some people have complained about the pillow’s shape” — Mattress Clarity, summarizing Amazon reviews (Side Sleeper Pillow)
Is It Worth It?
Yes, for dedicated side sleepers who struggle with neck or shoulder alignment. Adjust the fill to suit your shoulder width, buy the matching case, and use the 30-day return window to confirm the shape works for you.
Competitors Table
Feature | Eli & Elm | Coop Eden | Saatva Latex Pillow | Sleep Number ComfortFit Curved | Purple Harmony | Brooklyn Bedding Talalay |
Shape | U-shaped curve | Rectangular | Rectangular | Curved | Rectangular | Rectangular |
Adjustable fill | Yes | Yes | No | No | No | No |
Fill | Shredded latex + fiber | Foam + fiber | Shredded latex + fiber | Varies | Latex + grid | Talalay latex |
Sleep Foundation score | 8.9/10 | Not checked | Best overall pick | Not checked | Not checked | 9.0/10 |
Price | ~$120 | Mid | ~$165–$185 | Mid | Premium | ~$89–$99 |
FAQs
Is the Eli & Elm pillow good for side sleepers?
Yes. Sleep Foundation named it the most comfortable side sleeper pillow with an 8.9 out of 10 score. Its U-shaped cutout makes room for the shoulder to keep the neck aligned.
Can you adjust the Eli & Elm pillow?
Yes. You can unzip the case and liner to add or remove the shredded latex and fiber fill. That lets you set the height and firmness to match your shoulder width.
Is the Eli & Elm pillow good for stomach sleepers?
Not usually. Mattress Clarity says stomach sleepers and people who prefer a traditional rectangular pillow may want a different option, since this pillow is tall and designed for side sleeping.
How much does the Eli & Elm pillow cost?
Mattress Clarity lists it at $119.99, or $134.99 with a matching pillowcase. Eli & Elm runs frequent sales, so prices are often lower.
What is Eli & Elm’s return policy?
NBC Select reports a 30-day return policy. A retailer listing also mentions a five-year manufacturer warranty, so check current terms before buying.
Final Verdict
Eli & Elm has earned its reputation as one of the best pillows for side sleepers. Its U-shaped shoulder cutout addresses a real problem that ordinary pillows ignore, and testers from Sleep Foundation, PureWow, Woman & Home and The Gadgeteer all found it genuinely improved comfort and alignment. The adjustable shredded latex and fiber fill means you can tailor the height to your body, and the breathable cotton cover keeps it from sleeping too hot. Its 4.5-star average from more than 49,000 Amazon reviews shows that many buyers agree.
The trade-offs are cost, weight and a specialized shape. At about $120, it’s more expensive than most standard pillows, and PureWow notes it’s heavy. It’s built for dedicated side sleepers, so stomach sleepers and people who move between positions often may find it awkward. Anyone with a latex allergy should check before buying. If you sleep mainly on your side and wake up with neck or shoulder discomfort, Eli & Elm is well worth trying, especially with its 30-day return window as a safety net.
Scorecard
Category | Score |
Side Sleeper Comfort | 9.4/10 |
Shoulder & Neck Alignment | 9.2/10 |
Adjustability | 9.0/10 |
Breathability | 8.2/10 |
Material Safety | 8.4/10 |
Versatility Across Positions | 6.0/10 |
Value for Money | 7.2/10 |
Review Evidence | 8.0/10 |
Overall | 8.4/10 |
