Captain Stag Outdoor Trekking Backpack 35L Mountain Climbing This is a trekking backpack & bag for light mountain climbing, with many storage compartments such as pockets on the front. I have used it about twice since purchasing it. There are no tears or major stains, but it is a used item, so there is a feeling of use. Please purchase only if you understand this. Material: 600D Polyester Size (approx.): 320 x 200 x H660mm Capacity (approx.): 35L The waterproof cover is stored at the bottom (from the outside).