waterproof cycling backpack with Capacity

waterproof cycling backpack See-through top with easy access Velcro closure
Compression-molded body keeps its shape, simplifies item retrieval
Aerodynamic mounting position behind stem
Tool-free mounting via O-ring top tube strap and Velcro stem strap
Won't scratch or damage frame/stem
Capacity: 18 cu. in/0.3 liters
bicycle carrier bag Weight: 75 grams