Environmental TPU hydration bladder equipped, pressure-tolerant and leakproof drinking the water by the tube directly without taking your running vest off or stopping your step
Ultralight backpack with adjustable mesh shoulder straps and two sternum straps distribute weight effectively, reduces strength consumption
Spacious compartments with 5L loading capacity is large enough for storing most daily needs such as clothes,purse,books, cellphone, water-bottle and umbrella etc
Excellent air ventilation system consist of mesh back and mesh shoulder straps prevents stuffiness and releases pressure to your back