Rothco 58381 Black Wool Watch Cap. Keep warm this winter with this Wool Watch Cap from Rothco. It is crafted from 100% wool, will keep you insulated from the coldest of temperatures, and will protect you from any weather elements. These comfortably knit military wool hats offer unbeatable all-weather protection, are built to withstand rugged outdoor use, and will protect you wherever you go. They are great for daily wear, camping, fishing, hiking, skiing, snowboarding, skating, biking, and other outdoor activities. Imported.