Under Armour Foundation Short Sleeve T Shirt Mens. Under Armour GL Foundation Short Sleeve T Shirt MensThe GL Foundation Short Sleeve T Shirt from Under Armour features a crew neck, short sleeves and Heatgear technology to keep you cool. The look is completed with Under Armour branding.> Men's T Shirt> Ribbed Crew Neck> Short Sleeves> Elasticated Trims> Heatgear Technology> Printed Logo> Under Armour Branding> 60% Cotton, 40% Polyester> Machine Washable at 30 Degrees> Keep Away From Fire