[Waterproof and Tear-Resistant Oxford Fabric] The outdoor sofa cover is made of highly durable Oxford polyester with a thick PU coating. PU is superior to PVC because it is more durable, heat-resistant, tear-resistant, softer, and more comfortable. The waterproof sofa cover features external piping and double-stitched seams for enhanced strength and tear resistance. [Superior Water and Windproof Protection] To prevent water from seeping through the seams, a special waterproof glue has been developed for the stitching. The waterproof patio furniture cover is equipped with 6 windproof buckles and 6 drawstrings. Secure the buckles of the patio furniture cover to the legs of the patio furniture and tighten the drawstrings to prevent it from blowing away on windy days. [Anti-Mold Design] The outdoor protective cover has 4 large ventilation slots on each side and is designed with Mesh lining. The ventilation holes are designed to facilitate air circulation within the cover, prevent mold