Are you worried about where to put your phone and other necessary small items while riding a bicycle? Are you worried about the long-term use of the bicycle soft bag will always be deformed or wear? Are you worried about not protecting your belongings well when you fall accidentally? bike bag helps you to solve all problems. New upgrade technology, easy to install, fix firmly, which is both portable and safe. Enough Space: The cycling pack has enough space to meet your requirements. It can store mobile phones, earphones, power banks, energy biscuits, keys, wallet, USB cable, bicycle repair tools, gloves, glasses, drinks, and even a bike lock. etc Specification Product name: expandable multifunctional waterproof camel bag Color: black carbon pattern Weight: 1416.8g Capacity: 25L before expansion, 45L after expansion Material: 75G non-woven fabric nylon EVA Uses: shelf bags, shoulder bags, handbags Package list: 1 x Bicycle Kettle tail bag 1 x waterproof rain cover 1 x backpack strap