Perfect shirt as a mid-layer during a cooler workout! Ua M'S Ch. Midlayer from Under Armour is the perfect thinner training shirt. The brushed interior provides a soft and comfortable feel against the skin, while the material is quick-drying and moisture-wicking to keep you dry during your workout. With its simple and stylish logo on the chest, this mid-layer also makes a stylish and modern addition to your training wardrobe.