Material and durability - Made of 600D Oxford cloth, providing water resistance and wear resistance for a durable frame bag. Easy installation - Adjustable adhesive band allows quick and secure attachment to the bicycle frame, ensuring stable positioning. Water bottle holder - Built-in water bottle holder with a loose band to fix the bottle firmly during rides. Storage and compatibility - Conveniently carries smartphones, wallets, keys, and small bicycle maintenance tools, keeping essentials within easy reach on the frame. Use scenarios - Daily commuting: keeps your phone, wallet, and keys accessible while staying attached to the frame. - Urban rides and errands: secure bottle and compact storage for on-the-go necessities. - Short rides and light maintenance tasks: easy access to tools and essentials without removing the bag.