Constructed of 300D heathered polyester, the Adjustable Rucksack Backpack features an internal laptop or ipad pocket, and a flip over latched main compartment lid with zippered pocket on top making it the perfect choice for hiking, camping or daily use. The outer mesh pocket is perfect for holding a water bottle while the zippered front pocket provides secure storage of valuables. Hanging strap on the top for easy storage when not in use. 16 1/2" H x 10 5/8" W x 5" D