Compatible with Trek Procaliber 9.7 models from 2023 and 2024. This bicycle tube bag has a 2 liter capacity to meet daily riding needs. Please verify fit with your model before . sensitivity touch and visibility features. A transparent TPU touchscreen window allows you to operate your phone without removing it from the bag. A visor keeps the screen clearly visible in bright sunlight, and a headphone hole enables listening while riding. Multifunction storage design. The bag includes two side pockets and a removable phone pocket that attaches to the with Velcro, providing a practical 2in1 solution for phone storage and general gear. The bag is designed to sit snugly against the bike frame to minimize interference with pedaling. Ample storage and convenient access. Side pockets measure 17.5 cm x 4 cm x 11.3 cm, offering space for bike tools, snacks, and other small items you need on the go. Use scenarios Long rides or mixed terrain: keep your phone accessible for navigation through the touchscreen window while the visor protects the display from glare. Daily commuting: store snacks, a mini tool, and other essentials within the side pockets, with the phone pocket readily accessible via Velcro. Short trips or roadside fixes: carry small tools or parts in the side pockets and use the removable phone pocket for quick access to your device.