NWOT. Purchased for a trip but didn't end up using it. Sold out on the MW website and the Cobra buckle was an addon. "The Radian is a 42-liter pack designed to seamlessly navigate almost any environment with all the gear required for longer journeys. The elegance of The Radian lies in its configuration. The entire front panel zips open so that it can be packed flat like a suitcase, while at the same time maintaining the classic Mission Workshop roll-top closure for quick access to essential gear. (Roll top can be used with or without velcro.)"