Made of medium-weight Tri-Max« polyester, this is the only trike cover guaranteed to be 100% waterproof All seams are electronically heat sealed and have silver heat-resistant lower panels Exclusive Perma-Venting« system prevents condensation buildup by allowing constant air circulation 50" rear zipper gives access to trunk without cover removal Snug-fitting, elasticized bottom has 1" grommets in center and at front wheel Packed in included compression bag for the ultimate in compact storage. COVER TRIKE XL