Best Overall
Everlasting Comfort Knee Pillow
Key details
- Fill
- High-density memory foam
- Cover
- Removable, machine washable
- Strap
- Removable
- Dimensions
- 8.5"L x 6.3"W x 10.5"H
Most knee pillows here make you choose between staying put and feeling unencumbered. This one refuses to: the strap loops around the thigh to keep the cushion between your legs all night, and it unhooks in a couple of seconds when you want nothing wrapped around you. We left it on and stopped waking up to fish the pillow out from under the duvet.
The shape underneath is a shallow H, with a hollow on each side so both knees settle into their own dip instead of fighting over one wedge of foam. It's dense enough to hold the gap rather than pancaking, and that's the whole mechanism: hold the top leg level and the pelvis stops rotating forward. Of everything here, this is the one we tell a first-time buyer to get — a few seconds to fit, no learning curve, and a lifetime replacement policy behind it.
Where it gives ground is softness. The foam has a yielding quality that suits average builds but can compress under a heavier leg, and if you want a hard, unyielding wedge jammed between the knees, this isn't it. The upside of that give is that it never digs into the bony inside of the knee, which is where the firmest pillows in this group draw their complaints.
The cover unzips and goes in with the rest of the bedding, which matters more than it sounds for something pressed against your skin for eight hours a night.
Pros
- Removable strap holds it in place
- Concave shape cradles both knees
- Cover unzips for machine washing
- Lifetime replacement policy
Cons
- Short: covers the knees, not the thigh
We recommend it as the default knee pillow: contoured foam, a strap you can remove, and a lifetime replacement policy, for side sleepers who turn over in the night.