- Waterproof and Durable Construction : Crafted from carbon fiber grain leather, this bicycle frame bag combines an attractive design with robust functionality. It features a specialized waterproof TPU coating on both the exterior and interior, ensuring that your belongings stay dry. The built-in PP board adds extra support, maintaining the bag's shape while safeguarding its contents. - Simple Installation and Removal : Designed for convenience, this bike tube bag easily attaches beneath your bicycle tube using an adjustable Velcro fastener. The non-slip, soft leather material of the Velcro ensures minimal friction on the bike's inner tube, allowing for quick and secure setup. - Ample Storage for Essentials : Optimize your rides with dedicated space for key items like smartphones, wallets, keys, small bicycle pumps, cable locks, and repair tools. The main compartment dimensions are: Size M - 9.3 inches x 2.6 inches x 4.1 inches; Size S - 8.5 inches x 2.2 inches x 3.3 inches, perfectly suited for essential gear during your outings. - User-Friendly Open Design : The bike bag features a large zipper, making it easy to access your items quickly. Whether you're on a quick trip or a longer journey, retrieving and storing your gear is hassle-free. Use it during daily commutes to carry your essentials, on weekend rides for quick repairs, or while touring to secure your personal items. This bicycle frame bag is the perfect blend of style and practicality, making it a must-have accessory for any cyclist.