Norsewear pioneered the use of Possum/Merino in high performance outdoor socks. Our latest Possum Hiker Micro Crew wraps up all that expertise into an even better Possum/Merino active sock. Its ideal if you need a little extra insulation on the trail without sacrificing breathability and moisture control. The fully cushioned sole provides extra comfort and protection for extended time in the backcountry. Many of our customers say this is the most comfortable trail sock available - Its hard to argue with them.