From August 2012 to December 2014, Under Armour will make a donation of over $1 million to the Wounded Warrior Project, benefitting service members who were injured in the line of duty along with their families. The WWP Short-Sleeve Tee is constructed out of UA's breathable, ultrasoft Charged Cotton®, which expertly evaporates moisture and dries quickly. Imported. Center back length:__". Sizes: S-XL. Colors: Black, Carbon Heather.