Foot Heavan
I bought these socks to line under a pair of Bridgedale socks and standard offshore work boot. When wearing just the bridgedale socks my feet still got cold towards the end of my shift due to the moisture build up. Once I used the Smart Wool liners what a change! I just finished two months on a boat in the North Sea near Norway and not one day did my feet feel cold, tired, or generally in poor condition. I am usually on my feet most of the day and stand often on cold decks. The socks really do what I wanted them to do. I had been a little disappointed with Bridgedales alone. I cannot imagine now going offshore to work without at least four pairs of these socks. They made my whole two months work so much better. A great product.

Comfort and Warmth
I have used these Smartwool liners over the years, and have always been pleased. They add comfort when hiking under all conditions, and add surprising warmth during winter wanderings. They add very little bulk, and dry quickly. I am very pleased with these liner, and recommend them highly.

Good Liner
This liner fits well and is very comfortable. It has held up well so far, but does not seem to be as rigid as I would like. They do provide a good buffer zone for the foot. I have not used them on any intense hikes, but they performed well just walking through the woods.

Excellent wool liner
This liner is a little thicker than synthetic (polypropylene and Coolmax) liners, but it is an excellent choice for cooler conditions and if your boot/shoe can accommodate the additional layer. I've worn these cycling under merino wool socks, and I've worn these hiking under the Smartwool mountaineering socks. These liners did a great job of wicking away moisture and keeping my feet warm. I wear a size large in all Smartwool socks for my size 12 feet, and the size large for this liner fit just right, as expected. An additional bonus over synthetic liners is that putting on socks over these liners seems to be easier than with synthetic liners; the outer sock glides over these liners easier. I've read of others wearing these as dress socks, and I can see that the black liner would be a perfect choice with black dress shoes. The liners are suffliciently thick and have good elasticity to serve as a good dress sock. They don't slip down as synthetic liners would.

smartwool liner sock
It's cold here, and I am even pretty much an indoor person. However, I have been known to wear my liner smartwool socks all of the time for a week. Luckily, my foot in them produces no odor - I attribute that to the socks. Also, they keep their shape the whole time. They are light weight, and yet still much warmer than a regular sock, or a big heavy sock. They are totally smooth and not itchy. The amount of choices for the smartwool at ordering was some what overwhelming, but I overcame that by ordering black for my first pair...a no-brainer so to speak. I most certainly will be buying more.