Knowing how to choose the right pillow starts with matching its height to how you sleep. Side sleepers need a high pillow, back sleepers need a medium one and stomach sleepers need a low one.
Key Takeaways
- Start with height when you’re working out how to choose a pillow. Side sleepers need about 4 to 6 inches, back sleepers 3 to 5 and stomach sleepers under 3.
- Memory foam, latex, down and down alternative each balance support, softness, airflow and care differently, and adjustable pillows make height easiest to fine-tune.
- Replace most pillows every 1 to 2 years, or sooner once they go flat, lose support or trigger nighttime allergies.
Below, you’ll find the right height for each sleep position and what helps with neck pain or allergies. You’ll also see how the main materials compare and when to replace your current pillow.
Choosing a Pillow Based on Your Sleep Position
Every sleep position leaves a different gap between your head and the mattress, so side, back and stomach sleepers each need a different pillow height. That height is called loft, measured from the bed to the top of the pillow before you lie on it.
Fill the gap correctly and your neck can rest in a neutral position all night.
Side Sleepers
Side sleepers usually need a high loft of about 4 to 6 inches to fill the space between the shoulder and the ear. Look for enough support to stop your head from dipping toward the mattress or tilting up toward the ceiling.
Shoulder width and mattress firmness shift the right height. Broad shoulders need more height, while a soft mattress lets your shoulder sink so you may need less.
Adjustable pillows make this easier to get right. The Ecosa Pillow has a tall side and a short side, and side sleepers usually rest on the tall side. From there, you can add up to three memory foam height pads (two 0.8-inch and one 1.2-inch) until the gap feels filled.
Your arms affect comfort too. Our guide on where to put your arms when sleeping on your side shows how to ease shoulder pressure and arm numbness.
Back Sleepers
Back sleepers usually suit a medium loft of about 3 to 5 inches, which supports the head without pushing it forward. Contoured pillows help here because the raised edge fills the space under your neck.
Try the taller edge first, or the lower edge if you have a slighter build. Either way, your neck should keep its natural curve, with your chin level rather than tipped toward your chest. Pillows that are too high push your chin down, while pillows that are too low leave that curve without support.
Stomach Sleepers
Stomach sleepers need the lowest loft, usually under 3 inches, because the head stays turned to one side for much of the night.
Thick pillows lift the head higher and bend the neck back at a sharper angle. Soft, thin pillows are easier on the neck, and some stomach sleepers skip the pillow altogether. If that option appeals to you, our post on sleeping without a pillow weighs the pros and cons.
Choosing a Pillow for Neck Pain
If you wake with a stiff or sore neck, check whether your pillow keeps your head level with your spine. Adjustable pillows help most here, because you can change the height to suit your sleep position and build.
Pillows that sit too high or too low leave your neck bent for hours at a time. The Ecosa Pillow comes with three removable memory foam height pads, so you can add or remove layers until the height feels right. Change one pad at a time and give each setting a few nights before you adjust again.
If neck pain keeps coming back or comes with numbness or tingling in your arms, talk to your doctor.
Choosing a Pillow If You Have Allergies
Allergy sufferers should look for a hypoallergenic pillow and seal it inside a zippered dust mite cover. Dust mites live in pillows and bedding, and these covers keep their allergens from reaching you while you sleep.
National Jewish Health also recommends washing your bedding weekly in water of at least 130°F. Check the care label before you wash the pillow itself, because memory foam and latex pillows usually need only their covers washed.
Memory foam, latex and washable down alternative pillows all work well here, so choose the feel you prefer. If natural down bothers you, a down alternative pillow gives a similar soft feel with a synthetic fill.
Pillow Materials Explained
The four most common pillow fills each balance support, softness, airflow and care differently. Use the table for a quick comparison, then read on to see who each fill suits.
| Pillow Material | Features | Best For |
| Memory foam | Contouring, supportive and holds its shape | Sleepers who want close head and neck support |
| Latex | Springy, responsive, breathable and durable | Hot sleepers and anyone who prefers a bouncier feel |
| Down | Soft, light, moldable and plush | Sleepers who want a soft, cushioned pillow |
| Down alternative | Soft, light, washable and usually more affordable | Budget-conscious sleepers and anyone who wants an easy-care pillow |
Memory Foam
Memory foam molds around your head and neck for close, contouring support. It holds its shape well, which suits sleepers who want a steady feel through the night.
Traditional memory foam can trap heat, so look for ventilated or cooling designs if you run warm. The Ecosa Pillow uses a breathable 3D foam structure that helps heat and moisture move away from the surface, and its foam is CertiPUR-US certified.
For extra cooling, the Ecosa Cooling Pillow adds a cooling gel glaze to the foam and a cover that feels cool to the touch.
Latex
Latex feels springier than memory foam and bounces back quickly when you move. It cushions your head without the slow sinking feel of foam, so it suits sleepers who change position often.
Latex is also breathable and tends to outlast most other fills. Skip it if you have a latex allergy.
Down
Down pillows feel soft and light, and they’re easy to shape around your head. They compress more than foam or latex, so they suit sleepers who prefer a plush feel over firm support.
Check the label for down versus feather fill. Feather pillows feel firmer and heavier, and the quills can poke through the cover.
Down Alternative
Synthetic down alternative fill, usually polyester fiber, copies the soft feel of down at a lower price. These pillows are often machine washable, which makes them easy to keep fresh.
They lose their shape faster than foam or latex, though, so expect to fluff them often and replace them sooner.
How Often You Should Wash and Replace Your Pillow
Replace most pillows every 1 to 2 years, and wash them as often as the care label allows. Any pillow that stops holding its shape or supporting your head needs replacing sooner.
Lifespan depends on the fill. The Sleep Foundation puts memory foam at 2 to 3 years and latex at 2 to 4. Down lasts 1 to 3 years, while down alternative lasts 1 to 2.
Wash your pillowcases weekly with your sheets. Down alternative pillows can usually go in the washing machine, while memory foam and latex need spot cleaning and a washed cover. Our guide on how to clean your memory foam pillow walks through each step without damaging the foam.
Watch for these six signs that your pillow is ready to replace.
1. It Feels Flat or Lumpy
Flat or uneven filling can’t support your head and neck consistently.
2. It Doesn’t Spring Back Into Shape
Fold it in half and let go. If it stays folded, the fill has lost its structure.
3. You Keep Folding or Bunching It
Reshaping your pillow every night to get comfortable usually means it no longer gives you enough height.
4. You Wake With Neck or Shoulder Pain
Morning stiffness that keeps coming back can mean your pillow no longer keeps your head and neck aligned.
5. It Has Lingering Stains or Odors
Washing that no longer freshens it up, or heavy yellowing, means it’s time for a new one.
6. Your Allergies Act Up at Night
Old pillows collect dust mites, mold and dander over time, so stuffiness or itchy eyes in bed can point to a pillow past its prime.
Shop Ecosa Pillows
Once you know how to choose a pillow by height and fill, an adjustable memory foam pillow makes the final fit easy to get right. Both Ecosa pillows have a contoured tall and short side plus three removable height pads, so you can tune the loft to your sleep position.
The Ecosa Pillow suits most sleepers with its breathable 3D foam structure. The Ecosa Cooling Pillow adds a cooling gel glaze and a cool-to-touch cover for anyone who runs warm.
Each comes with free shipping across the US, excluding Alaska and Hawaii and a 100-night trial, so you can test the height at home. If you’re still unsure how to choose the right pillow, start with the height for your sleep position and adjust one pad at a time.