With water-resistant coating on outer surface and silicone coating on back, anti-tear and more durable;

Fix the bag onto bike with anti-slip PVC bands, stable and won't scratch the bike;

Multifunctional and extensible, side bags can be opened to become a saddle bag; Also can be folded to be a top tube bag;

Velcro tapes on main compartment, convenient to use;

Suitable for storing wallet, cellphone, keys, gloves, repair tools, etc.