Feature:1. Fashion and sports design: suitable for most mountain bikes and road bikes. The size is 39*17*40cm. Pay attention to check whether it fits your bike! Large capacity!2. Durable and fashionable fabric: made of 900D twill fabric, strong and fashionable. This is a good addition to your cycling. It is waterproof, but it is not recommended to use it in heavy rain for a long time.3. Aerodynamic design: The surface of the bag is smooth, which fits your frame perfectly. It will not affect your riding. The side zipper makes it easier to pick up items.4. Easy to install or remove: 4 wide adjustable shoulder straps can be installed stably and safely, the universal angle is suitable for most bicycle tripods, and you can place the water bottle. The Velcro can b.