DZ Heavy-Duty Cloth Mattress Covers protect your mattress investment Our heavy-duty cloth mattress covers are made to withstand years of wear and tear. The 6-8 oz. cotton/polyester blend is easy to care for and holds to multiple industrial washings. The open-end cover slips over the mattress like a pillowcase, for quick slip-on and removal. All seams are safety-stitched overlock construction for maximum durability. Please measure your mattress before ordering mattress covers to ensure proper fit.