Which is better for a wheelchair?

The DMI, because it has a non-skid bottom and a fabric cover. The Gilbin is bare foam with no stated grip, so it can slide on a wheelchair seat.

Is the Gilbin worth saving $2?

Yes if you just want cheap egg crate foam for a kitchen chair or car seat. The DMI's cover and non-skid base are worth the $2 for daily all-day sitting.

Neither is memory foam, and both are 4-inch egg crate foam that flattens with daily use. The DMI's cover protects the foam from sweat and friction, so it tends to hold up better.

Do either help pressure sores?

Both makers claim medical-grade foam that spreads weight and improves air circulation. Neither is a clinical pressure-relief cushion, so check with a clinician for existing sores.

The DMI cover is spot clean only. The Gilbin has no cover, so wipe the foam with a damp cloth and let it air dry.

Are they the same size?

Yes. Both are 18 x 16 x 4 inches, so either fits the same office chair, car seat or recliner.

DMI Egg Crate Foam Seat Cushion vs Gilbin Egg Crate Foam Chair Cushion

Both are 18 x 16 x 4 inch egg crate foam cushions rated 3.9 out of 5, and they are close to the same product. The Gilbin is the cheaper buy at $17.99 at Walmart as of November 7, 2026, against $19.99 at Amazon for the DMI as of the same date. Pick the DMI if you want a non-skid base and a fabric cover; pick the Gilbin if you want bare foam and the lower price.

Today the Gilbin Egg Crate Foam Chair Cushion costs $2.00 less at its best price.

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