The Mission Workshop Monty Messenger Bag feature the Arkiv® closure system and are made with with our new HT500 fabric. It features a water-resistant main compartment which can be used in either \"roll-top\" mode, or in the traditional \"flap-down\" configuration. The Monty is a 1,300 cu. in. (21L) weatherproof messenger bag featuring a roll top compartment along with two quick-access cargo pockets, one internal zippered pocket, custom aluminum hardware and a detachable cross-chest stabilizer. Fits up to 13’’ laptop in front zip pocket and up to a 15’’ in main compartment.