Invacare Zippered Mattress Cover, 80" L x 36" W x 6" D, 4" Thickness, Vinyl, Non-Allergenic, Waterproof Invacare offer customers the comfort, protection and durability of superior Homecare Mattresses by Invacare, along with Invacare Mattress Covers. Mattress covers will keep your Invacare mattress clean and fresh, and protect it from stains, odors, dust and incontinence. Covers are made of nonallergenic waterproof vinyl and are available in zippered and contoured styles. -Zippered mattress cover comes individually wrapped.