Ten Thousand Session Tank | Black | Size Small Featherweight and ultra-breathable for all high-sweat conditioning sessions. Built to excel in running, HIIT, rowing, yoga and other shirt-drenching activities, the Lightweight Shirt steps up when you demand it. With a no-cling fabric that wicks sweat and dries fast and a permanent anti-odor treatment, this shirt is guaranteed to stay out of your way in every session. You’ll hardly notice it’s there, but you’ll be grateful it is.