Material:High quality waterproof lightweight Polyester and Smooth Zipper
Main compartment with double-zipper closure;One exterior zipper pocket; Water-bottle pockets on both sides,padded Ipad/Laptop pocket,4 interior pockets
Adjustable padded Reinforced Strap,Reinforced bottom,fits 15" laptop
External dimensions: 18.9" x 12.6" x 5.9" ( HxLxW); Capacity: 23 Liters
It is a great backpack for casual life. You can take it to school, college, shopping, cycling, traveling etc.