Product Name: Bicycle frame Bag Waterproof Bicycle Triangle Bag Bike Bag Under The Tube Bag Model NO.: JB2020111 Color: Black Fashion Element: Stitching Bag Suit for: Outdoor Season: All Capacity: Big Style: Bike Bag Usage: Sports, Camping & Traveling Material: Polyester Gender: Unisex Trademark: OEM Transport Package: Carton Specification: 40 * 13.5 * 5.5CM Origin: Quanzhou, China HS Code: 4202129000 Product Description Stylish sports design: suitable for most mountain bikes and road bikes, please note whether the size is suitable for your bicycle, the size is 40 * 13.5 * 5.5CMDurable and fashionable fabrics: Made of 600D twill fabric, it is a sturdy and stylish style. It is a good complement to bicycles. It is a practical helper for cycling. It is waterproof, but it is not recommended to use it in heavy rain for a long time.Aerodynamic design: This bag fits the width and airflow of the frame with a smooth surface. So it won't increase the front face area and it will make you ride faster.Simple installation or disassembly: 4 wide adjustable shoulder straps for a stable and secure mounting, universal angle suitable for most bicycles' triangular frames, won't encroach on your water bottle.