Wildkin Aqua Big Dot 18 Inch Backpack Back made with high density padding and air mesh for extreme comfort Two-way zip opening into main compartment includes an internal padded laptop compartment with hook-and-loop closure Easy on your shoulders: high density padding and air mesh covered adjustable shoulder straps; adjustable sternum strap and webbing carrying handle Mesh bottle pockets on each side for bottles Highly-reflective band for night time safety