Features Shell: polyester ripstop with a TPU laminate Lining: recycled polyester Bottom: direct molded rubber 100% recycled molded rubber bottom 100% recycled aluminum components 100% recycled interior liners Main compartment has zippered side entry Exterior top pocket Interior side mesh pocket Organizer pocket with key tether 15.4-in padded laptop sleeve with built-in file sleeve and hook-and-loop closure Front hidden zip pocket Breathable molded foam back panel Padded shoulder straps Removable sternum strap Mesh cell phone and MP3 player pockets on shoulder strap