Product details:

Storage bag is sewn into the cover for quick and easy storage; when cover is in use, this exterior storage compartment can be used for gloves, sunglasses or other items. Cover is made with a 75-denier, rip-stop polyester with polyurethane and mildew-resistant undercoating for enhanced water- and mildew- resistance. Its not waterproof, but very close, so you will not have a wet butt after a rain shower. Two sewn-in vents allow moisture to escape. Soft cotton protects the windshield. Elastic shock cord is sewn into the bottom of the cover to provide a snug fit. Polyester webbing belly strap is sewn-in to prevent the cover from coming off in high winds. Plastic grommets allow the use of a cable to lock the cover to the bike.