I pretty much only wear HEAD leggings because I can always find a pair on Sale for under $12, and what a deal when you can. They all have a little pocket in the waist for my iPod, credit card etc.. and the various styles are amazing. I am 5'5', 126lbs and wear a small, and can squeeze into an XS (I have one pair), but small fits best, even when I put on a few pounds.