Description:Material: Made of 230T nylon cloth, the back is made of PU, soft and strong.Waterproof: The backpack can protect the items from water or rain when you are riding.Large Capacity: When opening the zipper, it can be expanded to 28L, you can use it to store helmets, cycling clothes, 14-inch flat panels, etc., Lightweight Design: It only weight 0.22kg, comes with a hook, easy to carry.One-piece Folding design: the bag can be folded and stored, which is light and convenient, and does not take up space.Size Chart:Backpack Size: approx. 46x28cm/18.11x11.02inchStorage Bag Size: approx. 15x16cm/5.91x6.30inchPackage Includes:1 Piece Motorcycle Backpack1 Piece Storage BagNote:1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful on-line shopping!