10L ENLARGED CAPATITY: Our bike carrier bag includes a main compartment, a extra top zippered pocket, a added inner net pouch and adjustable elastic cord, which helps keep your riding essentials well organized. Dimension of 13.4in or 34cm x 6.7in or 17cm x 6.3in or 16cm(L x W x H) , 10l capacity enough to contain wallet, phones, power bank, small speaker, towels, T-shirt,food, drinks,bike locks , small tools, water bottles, sunglasses etc.REFLECTIVE STRIPS: The reflective strips increase visibility at night, together with the rear belt for taillight(not included), which make you riding more safe.EASY TO INSTALL: This trunk attaches easily to the rear bike or e-bike rack with 2 velcro straps Interior equipped with thin PE foam for better protecting the gears in the bag. It could collapse flat when you dont use it.WATER RESISTANT andamp STURDY: The bicycle rack bag is made of PU leather andamp polyester, which is durable, water repellent and easy to clean. It even comes with rain cover that completely helps protect the trunk and the stuffs in it from dirt, sand, water, rain and snow.YOUR GREAT BIKING BUDDY: This bag features portable and lightweight. No matter what kind of occasion, such as picnics, backpacking, commuting and hiking, it will be your good partner. If you have any problem with it, dont hesitate to , were always at your service. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.