Waterproof: This bag is made of TPU material and is 3D integrally molded. Benefit from the excellent performance of TPU, high mechanical strength, TPU material has outstanding carrying capacity, excellent elasticity, impact resistance and shock absorption performance. Even in the harsh outdoor conditions, this bag can be waterproof and wear-resistant.

Easy to Open Design: High seamed zippers can withstand heavy rain, zippers are connected by a high quality nylon cable, This make it easier for you to get your goods.

Stable & Anti-Attrition: We are using three adjust rail systems to keep the bag in place. The straps are long enough to snug it down tight against the front tube and top tube. They are made of non-slip soft leather to reduce friction on the bike tube.

Optimal Storage Place for Small Items: Capacity: 1.2L. The main compartment is 8.84" x 2.55" x 3.54". It fits small essential items like a cell phone or a wallet. This bag has a shape body. It's only 2.55 inches wide and perfect fit your bike frame. Your legs won't touch it at all while pedalling.