i took one pair of shorts and one t-shirt and they did me for the hanger exercises and the fitness test. But then again, i did my fitness test on the last day, right after the hanger exercises. As i think the fitness test is now in part one - maybe take 2 sets? you'll probably get warm like StaVix said so they'll be fine for the hanger. From what I remember you have to tuck the bottom of the demins they give you into your socks for the command tasks, so take at least some ankle socks - not those tiny trainer ones.