resulting in an extended cruising range

Easy Installation and Universal Compatibility

ergonomic frame design

With a charging time of 7–9 hours

Long-Range Lithium Battery

bicycle bike cycling backpack day 0 To 250 Watt resulting in an extended cruisingSPECIFICATIONS is_customized: Yes Type: Backpack Origin: Mainland China Model Number: VH1726 Material: nylon Function: Rainproof Color: Black,Red,Blue,Green Brand Name: NoEnName_Null About backpack and water bag This product is backpack, water bag is accessories. Backpacks don't contain water bags. If you only need a backpack, please buy the 'bag only' option. If you need a backpack and water bag, please buy the 'bag + water' option.