Perfect Sun Visior The bag is with beautiful curved sun visior which can advoiding the sun when you use the phone. Super Waterproof This bike phone bag is with EVA and Carbon Fiber material waterproof PU material and seamless waterproof zipper. Durable & Shockproof The bike phone bag is made of PU and EVA material the bike frame bag adopts a special one-piece molding technology so the bike bag looks stiff and shcokproof at any time. Not rubs against your legs Better stability even on a bumpy or rocky road. Reasonable size it would not rubs against your legs while riding! Adjustable Velcros 3 Velcro straps make it firmer on the handlebar and is design for quick release and installation. The length of the velcro is engough you can adjust it by the scissor. Large Capacity Can store the daily supplies & maintenance tools. 3 Steps Easy to Install Fix the velcro under the package on the frame Fix another bottom velcro on the frame Fix the front straps of the cycling package across the bike hole