This has quickly become my go-to base layer for winter activities, and will soon become one for spring as well. My favorite feature of this hoodie, is its temperature regulation. Its amazing at breathing when you become hot, and wicks moisture away through the merino wool. ON the flip-side, it keeps you warm if the temps begin to drop, and stands up to light gusts. I am a huge fan of the quarter-zip, and it is a deep opening, which allows for extreme venting. This has a tighter fit to it, and this is perfect for a piece like this. Overall a fantastic base-layer, that is great for a variety of technical activities.