Breathable merino fibers help regulate body temperature and with the Cuffed Beanie from Smartwool your head will stay toasty and warm no matter how cold it is outside.  Made with 100% merino wool so it provides a naturally odor free beanie and tons of comfort for the winter. 

The PhD Ultralight Mini Sock by Smartwool is a super lightweight sock that has a double ribbed cuff for a secure fit and offers the new Smartfit 4 point banded fit system for awesome support. With Smartwool's blend of wool and other materials, you will find these socks can naturally temperature regulate while you are running keeping blisters and soreness from occuring. If your feet are cold, they stay warm, and vice versa allowing you to think more about where your feet are going instead of...(more)

The PhD Outdoor Ultra-Light Mini Sock by Smartwool is a versatile hiking sock that offers great ventilation and even better temperature regulation. Mesh zones are placed on the top of the sock so your feet can breathe while hiking in the summer months, while the wool itself provides a natural process of keeping your feet cool when warm and warm when cool. 

Wool also has a natural antibacterial nature so you don't lose friends when kicking of the hiking shoes at the end of a long...(more)

The PhD Outdoor Light Micro Sock by Smartwool is perfectly matched for the new trend of outdoor hiking shoes. With a nice low cut and plenty of supportive padding throughout the sock, you can hike all day and feel absolute comfort and temperature regulation. Wool can keep you warm when cold and keep you cool when hot, so the Outdoor Light Micro sock allows your foot to breathe, and moisture manages them so you can stay blister free and dry.

A great cut for fast hiking and low...(more)