[2.2L LARGE SPACE: The bike bag has enough inside room for long rides and holds a lot of stuff like a CO2 Pump lock light keys power bank cable sunglasses screwdrivers cycling gloves etc. Perfect compatible with cellphones below 7.2 inches iPhone XR XS MAX X 8 7 6s 6 plus 5s / Samsung Galaxy s8 s7 note 7. Two partition storage grid insides of the bag can better partition storage. shake-proof bike front frame bag HIGH-SENSITIVE TOUCH SCREEN: The bike phone bag has a highly sensitive TPU film window which can help you use your cellphone easily while riding great way to see your activity while using maps on a ride. HUMANIZATION DESIGN: The bike phone mount bag has many humanization designs. A The hidden earphone hole allows you to answer the phone or enjoy music freely while cycling. B Breathable double-sided hook-and-loop fastener secures the phone to prevent phone overheating. C dual soft rubber zipper pulls make it convenient to open & close TPU WATERPROOF MATERIAL:The bike top tube bag is made of TPU waterproof hard shell and TPU waterproof film design with sealed double zippers closure. ensuring that the no fear of getting your phone or bag items wet when it rains. The sun visor and flashing board are great to use for a rainy or sunny day EASY TO INSTALL & QUICK RELEASE: 3 straps are firm enough to hold up on the bike 1 hook-and-loop fastener commuter strap on the front + 1 longer commuter strap on the upper bottom( the long strap can fix the bag on the head tube firmly) + 1 commuter strap on the lower bottom. The bicycle bag would not move around even if you ride on a bumpy or rocky road]