Description: 【LARGE CAPACITY】: The Bike trunk bag large space is suitable for cellphone, wallet, gloves, glasses, repair tools, etc. enough to keep your essentials well organized. 【SAFETY】: The design of the tail light clip fixing device can hold a taillight which can enhance cycling safety at night. 【DUAL ZIPPER】: This bike bag designed with zippers design can effectively protect your goods. EVA hard shell is resistant to pressure and protects the items of the bag.. 【QUICK INSTALLATION】: Easy mount and quick release. The bicycle seat bag is lightweight and does not strain the frame and therefore does not increase the burden of cycling. 【MATERIALS】 : Designed with EVA which enhance the pressure and drop resistance to better protect bag. fit most of road bike, mount bike folding bike etc Size Chart: 28cmx10cmx8cm/11.02inchx3.94inchx3.15inch Package Includes: 1 Bike Trunk Bag Note: Please allow slightly errors due to manual measurement and different monitors.