Waterproof Heavy Weight Vinyl Brushed Silk Finish Treated With Ultra-fresh An Antimicrobial Which Inhibits The Growth Of Mold Mildew Fungi And Order Casuing Bacteria Fire Retardant Will Not Crack To -15f Zippered Covers Have Rust-proof Polyester Zippers Notice To California Consumers: Warning: This Product Contains Chemicals Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm