Loose: Generous, more relaxed fit Threadborne Siro fabric gives greater stretch & recovery, ultra-soft feel and more breathable performance Material wicks sweat and dries really fast Anti-odour technology Rolled forward shoulder seams Classic racer back and scoop neck collar Hit your workout with the performance-enhancing support of Under Armour's Threadborne Train Tank. The Threadborne Siro fabric delivers greater stretch and recovery as well as an ultra-soft feel. The material is designed to wick away sweat to leave you dry, comfortable and focused on your workout. All this in a loose, unrestrictive fit.