Fully waterproof design, IPX6 rated waterproof, effectively blocking water leakage. IPX6 fully waterproof fabric, can hang wet things externally, realize wet and dry separation, double shoulder backpack, inner pocket, breathable shoulder pads. Material: 420D 84T Nylon+Composite TPU Coating, weight: 0.95LB/1.21LB,/1.39LB. Adopts 420D82T nylon, wear-resistant and scratch-resistant composite TPU coating, can do IPX6 waterproof. Three different capacities of large backpacks to meet your different outdoor activities. Include short hikes and long hikes. I would definitely recommend this to anyone looking for something good for rain and holding lots of items, definitely would be perfect for hiking. Very large capacity. Easily fits a jacket lunch water bladder and quite a bit more if needed. It’s comfortable. The straps and zippers are strong. The back and straps are padded. Straps are not so close they’ll cut into your neck. Fully waterproof design, IPX6 rated waterproof, effectively blocking water leakage. IPX6 fully waterproof fabric, can hang wet things externally, realize wet and dry separation, double shoulder backpack, inner pocket, breathable shoulder pads.