Perfect for outdoor activities such as cycling

Bigger Capacity Battery & Safer BMS Board: With backlit HD LCD display

Practical: The top tube bag is only 5cm wide

The extended zipper cords allow for easy opening

Multifunctional & Versatile Application：It can be used as a bicycle bag

ROCKBROS Wasserdicht Oberrohrtasche Satteltasche 1L/1,5L Schwarz Size:M=1L Perfect for outdoor activities suchPerfect capacity: 2 sizes available: L(24. 5*10*8cm) M(22*9. 6*7. 6cm). (M for cell phones up to 6. 0 inches, L for cell phones up to 6. 5 inches.) Easy to assemble: With 3 adjustable Velcro fasteners, the bag can be quickly and stably attached to and removed from the bicycle frame. Waterproof and Reflective: This frame bag is waterproof and has reflective markings for safety at night. Not easily deformed: This bike bag is made of PU+EVA, wear