Heavyweight 8 gauge vinyl, electronically sealed seams to prevent ripping, we use heat-fusion technology to keep the zipper connected to the mattress protector at all times and to maintain its strength for years to come. This zippered vinyl mattress covers fully encase your mattress for ultimate protection and stay in place underneath your regular sheet to reduce wear and tear to your mattress. It is fully zippered on 3 sides and features a rust-proof zipper. Our vinyl covers are available in twin, full, queen, and king sizes, this protector will accommodate a mattress depth of up to 16". To clean, simply wipe the cover with a damp cloth.