Compartment for notebooks with 15"" to 16"" screens 3D contoured air-mesh back padding which helps alleviate back stress/strain Multiple pockets for maximum storage capacity (Mobile phone, CD player, smartphone, iPod, pens, business/student card) and many more! Hidden rear pocket for your personal belongings Additional features: Neoprene comfort grip handle, mesh pockets for your loose accessories, removable waist strap, adjustable fasteners on each side of the backpack