Egg crate vs memory foam mattress toppers: Design and materials An egg crate mattress has a unique design which features a wavy, convoluted foam with a "peaks and valleys" texture on top.

An egg crate mattress topper is a bed topper that uses wavy, convoluted foam with ridges that resemble an egg carton or crate. These uniquely designed mattress toppers are usually made from ...

If your mattress is losing some of its luster and bounce, but you don’t have the budget to replace it, throwing an egg crate foam on top can help you put off the purchase a little longer.