I used the longsleeve TempTech first to sleep in since it felt so soft. I was extremely comfortable to say the least. The next day I got up and went straight for a run in the same shirt. Extremely soft, wicked sweat away quickly, and the fit was perfect. Modern cut with a slight dip in the back, which also happens to make it a great mountain bike jersey. How many run shirts also double as amazing pajamas? Definitely my shirt of choice from here on out!