Mountain Hardwear Sentinel Messenger Bag Backpacks REG Black HardWear tarp main panel for durability, with heavy duty nylon side panels and shoulder strap Removable internal sleeve holds up to a 17 laptop with two additional sleeves for papersmagazinesnotebooks Organizer along front edge of main compartment Fleece lined top slash pocket for sunglasses, MP3 player, etc. Removable padded cell phone pocket on shoulder strap is cut to hold wider smartphones