Clinic Furniture Mattress MattressFlexible, waterproof mattress cover, easy to remove. $1.00 Request a Quote Material Mattress cover with flexible, waterproof, easily removable cover. Color Optional blue/green color. Sponge The mattress core is made of high-density polyurethane foam. Size Standard size to match each hospital bed, thickness is adjustable. Technical Parameters ▪ l1925mm x 900mm, standard size to match each hospital bed ▪ Thickness is adjustable ▪ Flat, 2 sections, and 4 sections optional