The Mountain Hardwear Zerna Military Beanie in the MultiCam patten is exclusive to SDKTac right now... "This MADE IN USA beanie was the result of over a year of development between SKD and Mountain Hardwear. Designed as a One-Size-Fits-Most item, the Mountain Hardwear Zerna Military Beanie is a multi-piece skull cap made with flat seams to fit comfortably under a helmet.