Constructed from heavy-duty, UV-treated fabric. Anti-scratch material on the interior prevents damage to the windshield. All seams are electronically heat-sealed, which makes the cover 100% waterproof. Air vents minimize the buildup of moisture. Aluminized bottom panels protect the cover from burning if it happens to rest on a hot exhaust. Extra grommets included near the bottom can be used to secure the cover with a chain lock (chain lock not included). Strong elasticized hems near the bottom of the cover ensure a secure fit. Storage bag included.