12L Cycle Hydration Backpack Lightweight Riding Vest Pack Backpack for Outdoor Running Camping Hiking Mountaineering Features: Main compartment accommodates a 1.5L water bladder (not included), convenient hydration system keep you replenished. Multiple front pockets help classify your belongings and keep them neat and organized. Reflective strips for increased visibility and safety during nighttime activities. Breathable mesh back provides excellent air ventilation, keeping you cool and comfortable. Adjustable shoulder straps, chest strap and waist strap, distribute weight effectively, reduces strength consumption. 12L loading capacity is large enough for storing most daily needs such as cellphone, water bottle, umbrella, power bank, etc. Suitable for riding, running, Cycle, camping, hiking, mountaineering, etc. Specification: Color: Red / Grey / Blue / Black (optional) Material: Polyester+Nylon+Spandex Capacity: 12L Fits chest circumference: 76-150cm / 29.9-59.1in Size: 20 * 10 * 38cm / 7.9*3.9*15.0in Weight: approx. 300g / 0.7lb Package List: 1* Backpack