The JanSport(R) cool student backpack has all the great features of our Big Student, plus a sleeve for a 15-inch" laptop and a synthetic leather base & trim. Go ahead, say it: That's cool. Ergonomic S-curve shoulder straps Fully padded back panel Side water bottle pocket Internal 15'' laptop sleeve Two large main compartments Cord pullers Pleated front stash pocket Web haul handle Fabric:600 Denier Polyester / Synthetic Leather Weight:1 lb 5 oz / 0.6 kg