HBAG 30L Army Assault 2 Day Camping Hiking Military Backpack Made of 900D and high density ripstop. Light weight, durable, comfortable and water-resistant 30+8L versatile storage or 1800ci (cubic inches) Padded interior sleeve can fit up to 14.1 inches laptop Air Direct back panel features foam pads covered in soft mesh that create multiple ventilation channels, helping ensure air flow and comfort Hydration system compatible (water bottle and hydration bag is not included)