5L Outdoor Running Backpack Bicycle Backpack Sports Vest Ultralight Riding Bag Women Men Breathable Jogging Sport Backpack For Camping Hiking Cycle Sport Bag This waterproof Cycle backpack with hydration insulation layer is specially designed for bicycle lovers and walkers. It weights only 4.9oz (140g) which make it a good companion for your fantastic outdoor experience. Nice bag for running, Cycle, hiking, fishing, etc. Features: Made from tear resistant and waterproof nylon fabric for extreme light weight and durability. Front elastic pocket and zipper bag on the shoulder strap keeps your necessities like cellphone, energy gel handy. (cellphone<6.6''). Mesh shoulder straps for maximum breathability and comfort. Reflective strips enhances visibility and safety. Hydration insulation layer and pipe outlet make drinking more convenient. 140 g / 4.9 oz only. Perfect choice for running, Cycle, mountaineering, hiking, fishing,  cross-country and other outdoor activities.  Note: Water bladder is NOT included. Specifications: Material: Nylon + Spandex + Polyester Color: Light gray & orange / Dark gray & orange / Blue / Black & white / Black & yellow / Black & blue / Black & green / Light gray & blue / Light gray & dark blue / Green ( optional ) Bag Capacity: Approx. 5 L Bag Size: 35 * 18 cm / 13.8 * 7.1 in Bag Weight: 140 g / 4.9 oz Package List:  1 * Backpack