Great for the game - and skilled enough to handle the court later. When you're a basketball fan in more ways than one, this team tee from Under Armour does double duty, combining your Celtics pride with key performance features.. . Loose: Generous, more relaxed fit.. Charged Cotton?? has the comfort of cotton, but dries much faster. 4-way stretch construction moves better in every direction. Material wicks sweat & dries really fast. Shaped hem delivers enhanced coverage without looking big & bulky. Cotton/Polyester/Elastane. Imported.