The Pearl Izumi Women's Transfer Sleeveless Base Layer makes a lot of sense. It give you an extra layer to help manage body temperature and moisture. And comfort? This baselayer is made with a contoured, stretchy fit and smooth seaming. This lets the P.R.O. Transfer fibers to maintain a next-to-skin fit; the material grabs sweat and wicks it away. Activated charcoal added to the polyester blend improves drying time.