This Smartwool thermal is great for multiple outdoor activities. It transitions from cool spring/fall weather as a single layer to the cold winter as the innermost layer. Note: too hot for summer. Breathes really well, doesn't smell after use, easy to clean in washing machine (turn inside out first) or by hand if you are out in the bush. Dries fast, but even better is that it will still keep you warm if it does get wet. I already owned the midweight version, but quickly bought the lightweight after my boyfriend used it on a trip out to Aspen, Colorado. Worked perfectly on a hike full of switchbacks where the sun became intense for bits and when the wind picked up the higher we went. This is a must-have piece that can be used over and over in many situations.
This shirt rocks! Smartwool makes great products, and Moosejaw sells great products! This top is less warm than the Smartwool midweight top. When it is used as a baselayer, it is perfect for wearing under a hardshell for adventures during the MI winters. Also, it looks great if you put it on sheep.