Maxit Thermal Shirt Sleeveless MSRP $77.00 ProMAX IV (92% polyproylene and 8% Lycra spandex) Made in USA Far Superior to any other base layer, cold weather shirt MAXIT Thermal Shirts provide maximum core warmth without bulky layering Comfortable, stretchable, cotton-like ProMAX IV fabric with flat seam construction Designed by MAXIT for professtional football players to maintain core body temperature in extreme cold weather games. The best quick-dry, moisture transport shirt available...Far superior to any other performance fabric shirt made from polyester or wool!