Rating: 5 / 5
The Smartwool turtleneck mid-weight merino wool was worn next to my skin for several days in 5-15 degF weather. The merino wool outperformed my Capilene base layers hands down in moisture management, which added to the total warmth factor. Managing layers while hiking was made easier as a result. The turtle neck comes with a zipper that lets you unzip down below the chest, which is a nice feature when it does happen to warm up a little and you need to exhaust some heat and moisture.