One of the things that i got for Christmas was a set of under Armor. A mock turtle neck shirt and the pants. Today was the first chance I had to check 'em out. I went pheasant hunting it was gonig to be a pretty mild day so I opted to just wear the shirt under My normal bird hunting shirt, left the at bottoms home. first impression this morning. Wow this stuff Is tight........second skin tight. second impression after looking in the mirror, Ray Lewis looks much better in his UA then I do in mine..........LOL to make a long story short, today started in the low 30's and rose into the high 30's with a brisk 10-15 MPH wind. Not bone chilling cold By any means but good and chilly with the wind. The UA worked great, I hunted with out a bulky coat just the UA and My shirt, Bill My buddy had his coat on all day. later in the afternoon I even got a little bit hot at times. Once You get used to the tight fit the stuff is quite comfortable. very pleased so far. I still need to check out the botom half of the set. And I am interested in how well it works when your not moving all the time like I was today. I'll keep you all posted, but so far Under Armor seems to be worth the price! Anyone else got this stuff?? Whatcha think?