To my disappointment -- these are NOT the Dri-Fit's with the built in handwarmers!!! They are not even the same material as tose Dri-Fit Distance 1/2 Zips. Major disappointment that Nike or RRS would name the same but be that much different. I bought from RRS even though more expensive for this item because I was already placing an order with RRS. They give great service but know this about this shirt!