What loft (height) pillow is best for side sleepers?

Most side sleepers need a 4–6 inch loft, but shoulder width and mattress firmness both affect this. A medium-firm mattress needs more loft than a soft one that lets your shoulder sink in.

How often should you replace your pillow?

Most pillows should be replaced every 1–2 years. High-quality memory foam pillows can last 3–5 years. Signs it's time to replace: persistent neck pain, lumps, inability to regain loft after fluffing.

Can a pillow cause shoulder pain?

Yes — a pillow that is too flat causes the neck to bend toward the mattress, creating tension on the shoulder. Proper loft keeps the spine neutral and significantly reduces shoulder and neck pain.

Best Pillows for Side Sleepers of 2026

Side sleeping is the most common sleep position — and also the most demanding on pillows. You need a pillow that fills the gap between your ear and the mattress to keep your spine in neutral alignment. Too flat and your neck bends down; too thick and it bends up.

These are the best pillows for side sleepers in 2026, chosen for proper loft, durability, and the ability to stay supportive through the night.

What to Look For

Loft (Height): Side sleepers generally need a medium-to-high loft (4–6 inches) to fill the shoulder gap. Match loft to your shoulder width and mattress firmness.
Fill Material: Shredded memory foam is adjustable, supportive, and breathable. Solid foam offers firm support. Down and down-alternative are soft but may compress over time.
Adjustability: Adjustable fill pillows let you add or remove material to dial in the exact loft for your body — the best option if unsure where to start.
Cooling Features: Side sleepers press their face into the pillow. Gel-infused foam, bamboo covers, and open-cell foam all reduce heat retention.
Washability: A machine-washable cover is essential for hygiene. Some shredded foam pillows can be fully machine washed — check the tag.

Our Top Picks

#1 Best Overall

Coop Home Goods Original Loft Pillow

Shredded cross-cut memory foam with a bamboo-viscose cover. Fully adjustable fill and a GREENGUARD Gold certification for low chemical emissions. Our top pick.

~$80 View on Amazon →

#2 Best for Hot Sleepers

Purple Harmony Pillow

The 3D grid core provides continuous airflow unlike any foam pillow — stays noticeably cooler. Talalay latex interior supports neck alignment without heat retention.

~$180 View on Amazon →

#3 Best Value

UTTU Sandwich Pillow Adjustable Memory Foam

Two removable layers let you adjust height in three configurations. High-quality memory foam, washable bamboo cover, and one of the best values in the adjustable pillow category.

~$60 View on Amazon →

#4 Best Luxury

Tempur-Cloud Pillow

TEMPUR material adapts to your head and neck position and recovers its shape over time. A machine-washable outer cover keeps the experience fresh.

~$130 View on Amazon →

Bottom Line

The Coop Home Goods Original is the best all-around pick — adjustable, well-made, and consistently reviewed as one of the best pillows for side sleepers. Hot sleepers should seriously consider the Purple Harmony despite its higher price.