CAMTOA Military Tactical 45L Backpack Daypack Shoulder Bag Waterproof Travel Backpack Daypack for Hiking Camping Travel Material:600D PVC nylon,durable,can carry heavy-duty. Size: Length: 55 cm (21.6in) Height: 30 cm (11.8 in) Depth: 20 cm (7.87 in) about 45L There is one large storage with a inside sleeve. The there are 2 outside zipped pockets. This backpack will hold a lot. Durable,waterproof,padded and adjustable shoulder straps Thickened computer protective interlayer inside,extra compartment for accessories 90 day money back guarantee. We'll give you your money within three months of receiving the product back if you are not satisfied with the product CAMTOA