Key features

• •Extensible Function---Massive Capacity holds everything you need when cycling, like energy bars, water bottle and power bank, etc. on the both sides of the zipper bottom compartment hidden an extended pannier bag, it add up to 11 liters roomy space to store more personal belongings.
• •High-quality Polyester---Made of durable 600D polyester material with water and mud repellent effect, extra lightweight but also solid and sturdy, provides full protection for your gears. The bottom padding is especially thick which is anti-skip and abrasion resistant.
• •Multifunctional Use---The bag not only can be used as bike trunk bag, but also as shoulder bag or gym bag, No matter you are travelling, go to gym or on biking trip with friends, this bag suits multiple occasions.
• •Unique Design---Convenient bottle holder with draw string designed for your convenience, reflective strips at back for safer night ride. It fits any bottle that less or equal than diameter 3.5 inches. U shape zipper opening, easier to take out inside items. The unique shape helps to reduce air resistance to the minimum, which provide you high speed cycling experience.
• •Easy and Convenient Installation---Velcro fastener hook and loop straps for easy and quick installation on all types of bicycles with a rear seat, such as mountain bike, road bike, etc.