Applicable models Bike Tube Phone Bag for Trek XCaliber 7 (2019, 2020, 2021). Capacity 2 liters. Please check fit with your model before . sensitivity touchscreen, visor, and headphone hole Transparent, sensitivity TPU touchscreen film lets you operate your phone inside the bag. visor keeps the screen clearly visible in strong sunlight, improving visibility during rides. Includes a headphone hole for listening to audio or navigation without removing the device. Multifunctional design Features two side pockets and a removable phone pocket for flexible storage. The phone pocket is securely attached to the of the bag with Velcro for quick access. The bag sits snugly against the bike frame to avoid interfering with pedaling. Large capacity Two side pockets provide ample space; overall dimensions of the pockets are 17.5 x 4 x 11.3 cm. Suitable for storing bike tools, snacks, and other small items you may need on a ride. Usage scenarios Daily commuting: keep your phone accessible and protected, with space for keys or small tools, while ensuring the bag does not obstruct pedaling. Longer rides or weekend trips: store essential tools, spare parts, and snacks in the side pockets for quick access. Trail or navigation runs: use the touchscreen through the clear TPU film and listen via the headphone hole without removing the phone from the bag.