This base layer is one of the best I've ever owned. It's form fitting in the arms, which allows for easy layering and slightly more relaxed in the torso for optimal warmth and comfort. The sleeves are extra long which is great for sliding into gloves without the sleeves riding up your arm as you ride. On cool fall days, on long rides, I've rode with just this base layer and a rain jacket on and stayed perfectly warm. I haven't been out in warm enough temps to truly test the moisture wicking capabilities but it's been perfect for cool/cold days this fall and early winter here in the PNW.
