Oxford.Drawstring closure.Combined Detchable Design: Hiking rucksack size approx is about HEIGHT 60CM*WIDTH33CM*THICKNESS25CM. The oxford material, waterproof, wear resistence and scratch resistant, weight approximately 2.1kg.Backpack for Men: The hiking pack has system, you can attaching additional pouches or gear on webbing,expand the external capacity of the backpack,as 3 day pack backpack or molle backpack,hiking backpack,camping backpack,climbing backpack.Multipurpose Using: backpack pack can use a multipurpose pack, backpacking backpack,survival back pack,outdoor backpack, camping hiking backpack,hunting backpack,travel backpack or school bag and so on.Durable Structure: Outdoor pack backpack with double-stitched, heavy duty zippers and utility-style cord pulls. We have already strengthen the stiching of shoulder strap and other sterss point throught the way of internal knotting reinforcement to improve the durability. It is designed for 3 days trip and large enough to carry all your gear.Comfortable Strap Design: 3 day backpack designed with adjustable foam mesh shoulder strap for reduce shoulder pressure, the shoulder strap is designed with a top adjustment webbing to adjust the tightness of the shoulder strap according to your needs, cinching waist strap can distribute the weight.