Applicable models and capacity: Bicycle Tube Phone Bag designed for Trek Remedy Carbon 29 2016, with a 2 liter capacity. Please verify fit with your model before . sensitivity touchscreen with visor and headphone hole: Transparent TPU touchscreen film allows easy phone operation without removing the device from the bag. The visor keeps the screen readable in bright sunlight, and a headphone hole enables wired audio use. Multifunctional design: Two side pockets plus a removable phone pocket for a 2in1 solution for phone storage and general items. The phone pocket attaches securely to the of the bag with Velcro, and the bag sits snug against the bike frame to avoid interfering with pedaling. Large capacity and practical access: Side pockets measure 17.5 x 4 x 11.3 cm, providing ample space for bike tools, snacks, and other small items for quick access during rides. Use scenarios: Long rides or endurance training: keep a phone accessible for navigation, plus tools and snacks in the side pockets for convenient access without stopping. Daily commuting: use the phone pocket for quick route checks and the side pockets for small essentials, while the bag stays close to the frame to minimize interference. Trail or offroad rides: visor improves screen visibility under variable lighting, and removable phone pocket offers flexible storage during challenging sections.