STM Chapter (15in) - Black STM-117-169P-01, Zip pockets for cables, chargers, and more, Rear luggage pass-through strap, Padded double handle for comfortable hand carry, Adjustable, removable shoulder strap, Lightweight, water-resistant fabric, Compatibility: up to 13-inch Notebook. Some of us prefer briefs (instead of boxers, instead of backpacks). STM provides those with this preference all the best features of our packs—our suspended tech cell, plenty of pockets, and ample room to store your stuff.