Applicable models Bicycle Tube Phone Bag for Trek Antelope 830 1991. Capacity 2 liters. Please verify compatibility with your model before . Key features and benefits Clear, accessible phone use on the go: Transparent, sensitivity TPU touchscreen window lets you operate your phone inside the bag. The visor keeps the screen clearly visible in bright sunlight, while a headphone hole supports listening without removing the phone. Practical 2in1 storage solution: The bag includes two side pockets and a removable phone pocket. The phone pocket attaches securely to the of the bag with Velcro, enabling quick access. The overall design sits snugly against the bike frame to avoid interfering with pedaling. Ample storage for everyday rides: Side pockets provide organized space for small items. The main bag accommodates bike tools, snacks, and other essentials, keeping them within easy reach. Specifications and layout Capacity: 2 liters Side pockets: two pockets, each with dimensions approximately 17.5 cm x 4 cm x 11.3 cm Phone pocket: removable, Velcrosecured to the of the bag Materials and features: TPU touchscreen window for phone operation; visor for screen visibility; headphone hole for audio access Use scenarios Daily commuting: keep your phone, keys, small tools, and snacks within reach without extra bulk. Weekend rides and longer tours: use the two side pockets for tools, patches, and spare parts, while the phone pocket stays accessible for navigation or calls. Training or mixed terrain rides: the snug frame fit minimizes movement, reducing interference with pedaling while providing quick access to essentials. Notes Please confirm compatibility with Trek Antelope 830 1991 before to ensure proper fit.