Under Armour Shirt The Tech Tee Mens L Grey Loose Short Sleeve Athletic Running. This is a men's Under Armour shirt in size L, featuring a crew neck and short sleeves. It is a gray pullover style made of polyester knit fabric. Designed for athletic activities, it is lightweight, breathable, and moisture-wicking. The loose fit and stretch fabric provide comfort for all seasons. The shirt is suitable for travel, activewear, and casual wear, making it ideal for activities like running, jogging, and gym training.