Odlo The Berra Mid Layer Half zip.

"Discover ultimate comfort and versatility with this mid layer from Odlo that sits perfectly under any hardshelljacket or vest. Whether you're skiing, hiking or just going about your everyday life, this mid layer with half-length zipper offers the perfect balance of warmth and freedom of movement. The stretchy stretch fleece material ensures optimum comfort and is also sustainable, as it is made from recycled material in Odlo's European production facilities."
"The soft, brushed inside of this mid-layer fits snugly against the skin and keeps you warm even on colder days. Thanks to its freedom of movement, it is ideal for endurance sports and various outdooractivitiesu00e4ten. This mid-layer will keep you active and comfortable all day long, whatever the weather."