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 *