Typical Ibex Excellence
Amazing top. It does a great job by itself into the 50s, then I add an extra layer if it gets any colder. It's form fitting, and stays that way even after several runs. As with all merino products, it keeps me dry. The sleeves are a good length, and the zipper doesn't dig into the skin like others do. I'm 5'11" 185lbs. and the medium fits tight the way a baselayer should.