Hard-Shell Top Tube Bike Phone Bag Folding eBike Works perfectly as a helmet

Works perfectly as a helmet liner or under a baseball cap

they ensure confident performance in challenging weather

or shoulder bag

conveniently

Goggles stay fog-free

Hard-Shell Top Tube Bike Phone Bag Folding eBike Works perfectly as a helmetROCKBROS Hard Shell Top Tube Bike Phone Bag Secure & Water Resistant Never worry about your phone or essentials bouncing around or getting wet while cycling. The Hard Shell Top Tube Bike Phone Bag is made from high density, crush resistant, and water resistant materials to protect your belongings in any condition. Three adjustable straps securely attach the bag to your bike frame, preventing wobbling on rough terrain. With 1. 5L of storage, it easily