The Fjallraven Abisko Lite Fleece 1/2-Zip is an excellent midlayer or next-to-skin layer for our shoulder season hiking and backpacking. The lightweight, polyester fleece adds a little insulation for brisk walks and cool mornings while it breathes, wicks moisture, and dries quickly to keep us cooler and drier when we amp up the intensity on switchbacks or scrambles to the summit.