These patio-furniture covers are made of durable, 600-denier spun polyester. They feature a unique venting system (allowing moisture to escape while articles stay dry). They have an innovative strap-and-buckle system designed to keep covers in place even in windy conditions. They are waterproofed using a proprietary, eco-friendly, dioxin-free coating, and they are available in multiple designs with coordinating solid-color covers. Contact: (800) 672-8343 or www.budgeindustries.com.