Milwaukee Workskin Men's Large High Visibility Short Sleeve Lightweight Performance Shirt. Durable lightweight shirt designed for tradesmen who need a next-to-skin layer that dries fast, stays cool, and protects from harmful ultra violet rays. The Milwaukee Workskin is made from moisture-wicking fabric that stays dry. The 100% polyester material dries fast and resists wrinkles, unlike standard cotton base layers. The relaxed fit and raglan sleeves allow mobility to accomplish any task for comfortable all day wear on the jobsite.