Large, waterproof storage: Spacious interior holds your everyday essentials and cycling gear. Made from waterproof material to protect contents from rain so phones, documents and clothing stay dry and secure. Durable, wear- and scratch-resistant construction: Built from robust materials for long-term use. The fabric resists abrasion and keeps the bag looking and performing well over time. Improved night and low-light safety: Reflective material and reflective piping increase visibility for safer night rides and early-morning commutes. Wide bike compatibility: Designed to fit electric bikes, road bikes and mountain bikes, providing a universal rear saddle mounting solution for many bicycle models. Easy access and secure closure: U-shaped double-opening cover allows quick, convenient access to items. An elastic drawcord keeps contents from shifting and secures smaller items in place. Extra organization: Side pockets provide additional storage for small items and quick-reach essentials. Reflective trim adds both function and safety. Practical uses Daily commuting: Keep your wallet, phone, keys and a compact rain jacket protected and organized while riding to work. Weekend rides and repairs: Carry a spare tube, multi-tool and pump in one waterproof pack that stays secure on gravel roads or singletrack. Night or low-light trips: Use on evening training rides or late commutes where the reflective design improves visibility to motorists. What you get A sturdy, weather-resistant rear saddle bag with a roomy interior, wear-resistant material, reflective details, U-shaped double-opening for fast access, elastic cord for secure storage, side pockets, and broad compatibility with e-bikes, road bikes and mountain bikes.