67% Woven Polyester With Laminated Polyvinyl Chloride Backing, 33% Non-woven Olefin With Laminated Polyethylene Waterproof fabric offers ideal protection from the rain, wind, sun, dirt, and debris Sealed seams prevent water from leaking through the stitching A combination of nylon straps with side-release buckles firmly secures cover in place Two-year limited warranty For best results, we recommend storing cushions separately when not in use