Common filling materials include polyester and polyurethane foam; some adult models use 100% memory foam. Covers and surface fabrics commonly listed are cotton or certified organic cotton, knit blends, and polyester.
Thicknesses typically range from about 5 inches up to 6 inches, with several options concentrated around 5 to 5.5 inches.
Most crib and toddler mattresses measure about 51.6–52 inches long and about 27.25–28 inches wide, matching standard crib and toddler bed dimensions.
Care varies by model but commonly includes spot or wipe-clean recommendations. Many mattresses feature removable, machine-washable outer covers; for non-removable covers, manufacturers typically recommend cleaning with water and mild detergent.
Weights vary: most crib and toddler mattresses range from about 7 pounds up to the low teens, while an example adult queen memory foam model is listed at about 40 pounds.