Best egg crate foam seat cushions for chairs

Start with the Gilbin Convoluted Egg Crate Foam Chair Cushion. It's the classic egg-crate build — 4 inches of convoluted foam on an 18 x 16 inch seat — so the peaks spread pressure and let air move under you, which is what keeps a hard chair from going sore. It's the plainest, most affordable way to get that effect.

Who the others suit:

• Shinnwa egg crate recliner cushion — if you want egg-crate foam plus a back/lumbar pillow and a bigger 20 x 20 inch seat.
• Nova Medical convoluted cushion — if you want a firmer, thinner 3-inch egg-crate pad, including for a wheelchair.
• Recliner cushion with egg foam seat and memory foam back — if you'd rather have a memory-foam backrest behind the egg-crate seat.
• Cloud Cradle — if you'd trade egg-crate texture for dense, breathable foam with a strong review record.
• 2-pack egg crate cushions — if you're outfitting two chairs.

Check the seat depth of your chair against the 16–18 inch lengths before ordering.