All Smartwool socks are made in the USA & contain super-comfortable and durable merino wool. Merino wool is breathable in summer, insulating in winter, yet exceptionally soft and lightweight. Vogels and Fosters carries a WIDE selection of Smartwool for men and women. Also, we offer a Smartwool “club” – We can keep a card on file and track your purchases for you! When you’ve purchased 12 pair, you’ll receive the 13th one free.