KAKA 55L Outdoor Travel Hiking Trekking Camping Tactical Backpack Climbing Bag with Coded Lock Capacity: 55L, enough for holding travel belongings. Various layers and pockets can help you organize your articles properly Made of high quality oxford lawn and waterproof nylon. Strong and durable Comfortable, 3D ventilated back to allow the airflow to make you feel more comfortable. The S-shape shoulder straps to fit your shoulders perfectly Thickened back save your burden energy when you wear it. Shoulder straps and waist straps can be adjusted as your need