Large Capacity Design: it can store your wallet,cellphone,small tools,power bank etc. The inner mesh bag can separate such as bank card little thing reasonable. And streamlined design not only have stylish appearance but also can reduce drag, things are not easy to fall out.Easy to Install & Remove: Adjustable snap,upgrade fixed buckle,Velcro design can be cut to the desired length ,it wont take you 5 minutes to install or remove.Waterproof Upgrade: Material upgrade,the bag is make from fiber composite EVA composite material,toughness more tear-resistant. Zipper adhensive processing technology,the effectiveness of waterproof is better.Safety: Yellow part reflective of the warming,is conspicuous when night riding, greatly improve the safety .Dimensions: 18*9*10.5CM, 126g.