These 2018 New Era 39Thirty Salute to Service Caps are the On-Field Caps you'll be seeing on your favorite NFL Players when they are at home this season! New Era features their Coolera® technology featuring moisture management system that wicks away sweat and Microera® technology featuring an anti-microbial agent to reduce odor when performing at your peak! This is the same Cap players will be wearing on the Sideline During Salute to Service month in the NFL and all NFL proceeds are donated to military non-profit organizations! Sizing is medium/large for one-size-fits-most..