Patagonia wool blend heavyweight socks. Size is 27cm-29cm (I'm 27.5). I bought these for backcountry snowboarding and used them only once. I'm selling them because I haven't had a chance to use them since. They're quite warm, so I think they're a good product for really cold winters, like -10°C or below. Of course, there's a difference in how people feel about the cold, so I think they can also be useful for early winter mountain climbing or at ski resorts. The purchase price was over 3000 yen. Gender: Men's