3 Photo Agency issued Official IOC Olympic Games photo vests. I worked nearly each day OFFSITE from events> hence I seldom used any of the 3 vests. RIO & LONDON are size M. BEIJING is a L. To be honest they all run a wee bit big to hold gear in the pockets. The first 100$ gets them all. At least I did not need to share my blood type in the 2008 games. (SeePhoto).