Timbuk2 Classic Messenger Bag Medium, Gunmetal Style Number:2023 4 2003 forward set shoulder seams Underarm ventilation NKIO8141 S Black forward set shoulder seams Underarm ventilation system Internal zippered chest pocket Two internal drop in pockets 95 5 polyester spandex closed hole mesh with stay cool wicking technology OGIO heat transfer label for tag free comfort Flat knit collar 4 button placket Woven OGIO badge at left side seam Set in Eco Cordura is made using recycled pre and post consumer materials Weatherproof exterior and waterproof 70D TPU liner resist moisture Aircraft grade 6061 aluminum tri glide buckle adjusts strap quickly OrthoLite® foam strap pad provides lasting comfort and support Switchable shoulder strap lets you choose right or left handed carry Dual side vertical zip front pocket offers fast access to essentials (S L) Spacious interior with extra organization and dual water bottle pockets