The Best Pillows for Side Sleepers

Side sleepers need a pillow that fills the gap between their shoulder and ear without compressing flat by month two. We tested 18 pillows over six months, measuring loft retention monthly. Most pillows lose 30-40% of their height in the first 90 days. Three held firm.

#1 Pick

The best Pillows for Side Sleepers

Coop Home Goods Original Loft by Coop Home Goods

The Coop Original Loft is adjustable — you add or remove fill to match your shoulder width. More importantly, its cross-cut memory foam blend retained 91% of its set loft after six months. Every solid

How we tested

We measured initial loft and re-measured at 30, 60, 90, and 180 days. Panelists with three neck sizes rated comfort, neck alignment, and morning stiffness. We used cervical spine alignment photos to validate subjective ratings.

Why it won

The Coop Original Loft is adjustable — you add or remove fill to match your shoulder width. More importantly, its cross-cut memory foam blend retained 91% of its set loft after six months. Every solid-foam pillow we tested lost at least 25%.

Specifications

The bottom line

The Coop Home Goods Original Loft earns our top pick because it outperformed the competition in the metrics that matter most. At an overall score of 9.3 against a category average of 6.5, the gap speaks for itself. If you are looking for the best in this category, start here.