Made of medium-weight Tri-Max® polyester, this is the only trike cover guaranteed to be 100% waterproofAll seams are electronically heat sealed and have silver heat-resistant lower panelsPerma-Venting® system prevents condensation buildup by allowing constant air circulation50 rear zipper gives access to trunk without cover removalSnug-fitting, elasticized bottom has 1" grommets in center and at front wheelPacked in included compression bag for the ultimate in compact storage"