DESIGN Waterproof process:seamless welding and waterproof TPU fabric material to prevent rainwater infiltration;Strap Fixing:Fixed by three straps on the frame,easy to install, quick release and easy to take off.Screw fastening:The frame is secured with screws, which makes it easy to dismantle and fasten without shaking.Wind-breaking shape:wind-breaking shape design,swinging the bike willnottouch the legs,and reduce wind resistance.Lightweight and Sturdy:Internal hard shell support, three-dimensional and sturdy, net weight 152G