Anothernice product by Under Armour.  Seems like everything they make is of very nice quality.  I have a lot of their heat gear, cold gear, rash guards, gloves, hats, etc.  Use them for Surfing, kiteboarding under wet/dry suits, and also for base layers for snowboarding.  The best products IMO from anything offered out there (North Face, Helly Hanson, etc.)