The Bicycle Travel Bag is made of 600 Denier & lined with Poly-Vinyl Chloride (PVC) for waterproofing. The bag has built-in compartments for storing extra gear such as a helmet, shoes, wheels, etc.Use the Bicycle Travel Bag to store your bike in the off season.The bag has dual, heavy-duty zippers allowing for easy opening & closing, padded shoulder strap and side release buckles, and has reinforced, padded and protected bottom and sides.The bag will fit mountain, road and hybrid frames up to 27 inches.Ideal for airline travel, rail, auto, subway, roof racks, apartments,and office commutes.The bag is washable with mild soap & water.