by The best pillow for people who switch between side and back sleeping is one with adjustable loft, because side sleeping needs 4–6 inches of fill to bridge the shoulder gap, while back sleeping needs 3–4 inches to keep the cervical curve neutral. One fixed pillow can't serve both unless you can tune it.
We tested five pillows specifically chosen for combination side/back sleepers, evaluating loft range, fill adjustability, neck alignment in both positions, cooling, and long-term shape retention. Here are the ones that held up.
| Pillow | Best For | Fill Type | Adjustable | Loft Range | Price (Queen) | Score |
|---|---|---|---|---|---|---|
| Coop Home Goods Original | Best Overall | Shredded foam + microfiber | Yes (add/remove fill) | 3–6” | ~$72 | 9.1 |
| Luxome LAYR | Best Modular | 3 inserts: down alt + gel foam | Yes (swap inserts) | 2–7” | ~$150 | 8.8 |
| Purple Harmony | Best for Hot Sleepers | Talalay latex + Purple Grid | 3 fixed heights | 5.5 / 6.5 / 7.5” | ~$179 | 8.6 |
| Saatva Latex Pillow | Best Luxury | Shredded Talalay latex + down alt | No (fixed loft) | Fixed medium-high | ~$165 | 8.2 |
| Nectar Tri-Comfort Cooling | Best Budget Cooling | Cross-cut memory foam + microfiber | Yes (redistribute fill) | 3–5.5” | ~$75 | 8.0 |
How We Chose
We focused exclusively on pillows that address the dual-position problem: fill adjustability, a loft range that covers both side (4–6”) and back (3–4”) needs, and materials that don't go flat after 60 nights. We cross-referenced lab testing data from Sleep Foundation, Sleepopolis, and Mattress Clarity, then weighted five criteria:
- Loft range & adjustability (30%), can it actually work for both positions?
- Spinal/cervical alignment support (25%), tested data or documented tester feedback
- Cooling performance (20%), cover material, fill breathability, heat retention tests
- Shape retention over 60+ nights (15%), no pillow should go flat by month two
- Value for price (10%), price relative to performance tier
Amerisleep is not included here. Their product line is mattresses, they don't make pillows and we don't manufacture endorsements to fill a card slot.
How to Pick the Right Pillow When You Sleep Both on Your Side and Back
Most pillow advice is built around a single sleep position. Side sleeper guides push high-loft firmness. Back sleeper guides push medium-loft support. If you split your nights between both positions, and most people do, since the average person changes position 40–50 times per night, standard positional advice puts you in an impossible bind. Here's what actually matters.
The loft problem: why one fixed pillow usually fails
When you're on your side, you need the pillow to bridge the gap between your ear and the mattress, roughly 4–6 inches depending on shoulder width and mattress softness. When you roll onto your back, that same high loft pushes your head forward and strains the cervical muscles. A pillow correctly sized for side sleeping is too high for back sleeping by about 1.5–2 inches for most people.
This is why adjustable fill is the single most important spec for combination sleepers. When you can remove or add fill, you're not locked into one loft. The Coop Original wins here because it ships with an extra half-pound bag of fill, you can overstuff it for a firm side-sleeping night and flatten it down when you roll over.
Fill types and what they actually do
Not all fills behave the same when your position changes:
- Shredded memory foam (Coop, Nectar): adapts to position changes quickly, holds loft, adjustable. The downside is heat retention, look for bamboo or Tencel covers to compensate.
- Shredded or solid latex (Saatva, Purple Harmony core): springier than foam, cooler, longer-lasting. The Purple Harmony's Grid addition takes this further. Latex pillows tend to be heavier and more expensive.
- Modular inserts (Luxome LAYR): the most granular adjustment available. Takes longer to set up but once dialed in, stays consistent.
- Down and down alternative: highly compressible, easy to fold or flatten mid-night. The drawback is loft loss over time, a down pillow that starts at 5 inches may be at 3 inches after three months without regular fluffing.
Shoulder width matters more than people think
Pillow loft recommendations are always averages. The actual loft you need for side sleeping depends on the distance from your ear to the mattress surface with your shoulder touching the mattress. Someone with broad shoulders on a soft mattress may sink in enough that a 5" loft works. Someone with narrow shoulders on a firm latex mattress might find a 4" loft already too high.
A rough guide: measure from your shoulder to your neck with a soft tape measure while lying on your side. That number, minus about half an inch for sink-in, is your target loft. Most adults land between 4 and 6 inches for side sleeping and 3 to 4 inches for back sleeping.
Cooling isn't just about the fill
The cover material does most of the work for temperature regulation. Bamboo and Tencel covers wick moisture and feel cooler to the touch than standard polyester. Mesh vent bands (like on the Luxome LAYR) add passive airflow. Phase-change materials and gel infusions in the foam help, but the effect is moderate, gel-infused memory foam still retains more heat than latex.
If you sleep hot, the Purple Harmony is the honest recommendation, its hyper-elastic grid creates actual air channels rather than just a cooling-claim cover. For budget-conscious hot sleepers, the Nectar Tri-Comfort is the next best option.
Shape retention: the six-month problem
A pillow that starts well but compresses flat within six months is a hidden cost. Down and down-alternative fills are most susceptible to this. Shredded memory foam (especially at higher densities) retains shape significantly longer. Latex is the most durable fill type, shredded Talalay latex maintains its loft for years rather than months.
Machine washability is related: pillows you can wash regularly stay fresher and also tend to maintain loft better because washing redistributes fill. The Coop Original has fully machine-washable inner and outer covers, which is a practical durability advantage.
One pillow vs. two
Some combination sleepers end up using two pillows: a higher-loft firm one for side sleeping and a flatter, softer one for back sleeping. This works but requires you to swap pillows mid-night, which most people won't actually do while half-asleep. The adjustable pillow approach, one pillow with a fill level that's a reasonable compromise for both positions, works better in practice.
A practical starting point with the Coop Original: add enough fill to feel supportive on your side, then lie on your back and see if the loft is neutral. Most people find that a Coop at 70% fill works reasonably well for both positions without mid-night adjustment.
Mattress firmness changes the math
On a soft mattress, your shoulder sinks in, reducing the gap you need to fill with the pillow. On a firm mattress, your shoulder sits higher and you'll need more loft to maintain neutral alignment. As a rule: firm mattress = higher pillow loft needed; soft mattress = lower pillow loft needed. This is another reason adjustable fill pillows outperform fixed-loft options for combination sleepers who may sleep on different mattresses (travel, guest rooms, partner's different-firmness bed).
Frequently Asked Questions
Questions we get most about pillows for side and back sleepers.
What loft is right for side and back sleepers?
Side sleeping typically needs 4–6 inches of pillow loft (more for broad shoulders, less for narrow). Back sleeping needs 3–4 inches. If you sleep in both positions, an adjustable pillow set to around 4–4.5 inches is the most workable compromise for most people. The Coop Original at roughly 70–75% fill lands in this range for average shoulder widths.
Is memory foam or latex better for combination sleepers?
Shredded memory foam is more adjustable and usually cheaper, which makes it the practical winner for most combination sleepers. Shredded latex is more durable and cooler but less adjustable and more expensive. If heat is your main issue, latex or the Purple Grid beats any gel-infused memory foam. If adjustability and price matter most, shredded foam wins.
Can one pillow really work for both side and back sleeping?
Yes, with an adjustable fill pillow. The key is setting the fill level to a compromise, high enough for side sleeping but not so high it cranks your head forward on your back. For most people, this means filling the Coop or a similar adjustable pillow to about 70–75% capacity rather than stuffing it full. A true 50/50 combination sleeper may find the Luxome LAYR's modular system worth the higher price because the inserts can be swapped more deliberately.
How often should a pillow be replaced?
Polyester-fill and down pillows typically need replacing every 1–2 years as they lose loft. Quality shredded memory foam (like the Coop Original) can last 3–4 years with regular washing. Latex pillows, solid or shredded, are the most durable and can maintain their support for 4–6 years. The real test: fold the pillow in half and release it. If it doesn't spring back, it's time to replace.
Why isn't Amerisleep on this list?
Amerisleep makes mattresses, not pillows. Their product line doesn't include a pillow for side and back sleepers, so they're not relevant to this category. We only include products that are genuinely available and directly competitive for the use case.
Does mattress firmness affect which pillow height I need?
Yes. On a soft mattress, your shoulder sinks in, reducing the gap you need to fill. On a firm mattress, your shoulder sits higher and you'll need more pillow loft to maintain neutral alignment. Firm mattress = higher loft needed; soft mattress = lower loft needed. This is another reason adjustable fill pillows outperform fixed-loft options for combination sleepers who may sleep on different mattresses while traveling.