【30 seconds installation, easy and fast】-Three-point stable installation design, and Velcro fixing design, which can be quickly installed and removed, just place the automatic roof tube to fix it. Even one person can install it easily and quickly, saving time and energy when preparing for your ride.

【High-quality material, scratch-resistant and waterproof】-The top tube bicycle bag is made of upgraded material Oxford cloth, which has the characteristics of super resistance to friction, fall resistance, high material density, and excellent waterproof performance. An extra rain cover is included for double-layer protection in case of bad weather. Even when riding outdoors, you dont have to worry about the items in your bike bag getting wet.

【Humanized design, not harmful to knees】-This bicycle bag was tested by many cycling enthusiasts and professional cyclists to design the most suitable space for riding. Without banging your knees while riding, you can enjoy your ride with peace of mind and comfort.