Nelson Rigg Defender Trike Cover Features a Perma-Venting system that prevents condensation build up by allowing constant air circulation. Features UltraMax durable polyester material UV protected 100 waterproof Double-stitched with electronically sealed seams Silver heat-resistant lower panels Soft windshield protector 50 rear zipper gives access to the trunk without removal of the cover Snug fitting elastic bottom with 1 grommets in center and at front wheel Folds into its own compression bag LG fits trikes up to 57 rear width XL fits trikes up to 65 rear width