20l ergonomic waterproof bicycle backpack ventilated cycling climbing travel running portable backpack outdoor sports water bags mx200717

20l ergonomic waterproof bicycle backpack ventilate cycling climbing travel running portable backpack outdoor sports water bags feature: * 100% brand new and good working condition * with inner pocket * light in weight * easy to use on/off * adjustable chest and shoulder straps specifications: * function: multifunction backpack bag * material: high strength mesh fabric+polyster * color: 6 colors for your choose * style: backpack * capacity: 20l * applications:cycling, hiking,runn...