Bicycle Tube Phone Bag for Trek Procaliber 2025 Capacity 2 liters and designed to stay secure on the tube without interfering with pedaling. Please check compatibility with your model before . Key benefits Easy phone access and visibility Transparent sensitivity TPU touchscreen film lets you operate your phone inside the bag without removing it. visor keeps the screen clearly visible in bright sunlight. Headphone hole enables listening while the phone remains protected inside the bag. Flexible and organized storage Two side pockets plus a removable phone pocket provide a 2in1 solution for phone storage and general gear. Phone pocket attaches to the of the bag with Velcro for quick removal or repositioning. The bag sits snug against the bike frame to minimize interference with pedaling. Generous capacity Side pockets measure 17.5 cm x 4 cm x 11.3 cm, offering ample space for bike tools, snacks, and other small items. Compatibility and fit Specifically designed for Trek Procaliber 2025 models. Please verify your bike model compatibility before . Practical use scenarios Daily rides and commutes: keep your phone accessible for navigation or calls, with room for a few small essentials in the side pockets. Longer rides or bike trips: store tools, spare parts, and snacks in the side pockets while keeping the phone pocket secure and reachable. Training or group rides: use the phone pocket for maps or music, using the headphone hole to listen without exposing devices to the elements. Notes All features reflect the stated specifications: 2liter capacity, two side pockets, removable phone pocket with Velcro, TPU touchscreen film, visor, and headphone hole. Ensure proper installation to maintain a secure fit and prevent any interference with pedaling.