HeatKeep Mens Performance Grey Longsleeve Thermal-Size X-Large 34%Polyester/37%Acrylic/25%Rayon /4%Spandex HeatKeep performance Longsleeve Shirts are the perfect cool-weather companion The stretchy, lightweight fabric blend is durable, flexible and retains its shape while keeping you warm. Wear these shirts as a base-layer, during outdoor workouts or by themselves. Size: X-Large Mens Color: Grey