Milwaukee Workskin Men's 3XL Black Base Layer Pants. Base layer Workskin collection pants. Built to fight sweat, engineered with a custom sweat-wicking fabric and a brushed fleece interior, they keep you dry and warm in a variety of jobsite conditions. Complete with a 4-way stretch, this thermal bottom is designed for next-to-skin comfort to layer easily in cold weather. Milwaukee Workskin products are developed in collaboration with feedback from users across the trades through continuous jobsite research.