The feet tend to get cold in winter and even in hot weather due to air conditioning. I actually tried the "Sock Supplement As If You Were in a Kotatsu Socks," which is talked about as being as warm as being in a kotatsu.

Sock Supplement: Just like Kotatsu Socks

The key to keeping your body cool is to keep your neck, wrists, and ankles warm, where the blood flows. The "Sock Supplement As If You Were a Kotatsu Socks" are socks that use a unique knitting method to warm up the acupuncture point on the ankle, the Sanninjiao. The socks are made of Okamoto's proprietary special heat-retaining and heat-generating material.


Available in gray, black, wine, ivory, and fairy pink (I bought the black ones this time). Available in sizes 23 to 25 cm, priced at 1,980 yen (tax included).


An integrated sock and leg warmer. The ankle area is structured differently from other socks, but there is no discomfort or tightness when you wear them. They feel good against the skin, and you feel like you are wrapped in warmth, just like being under a kotatsu.


The leg warmers can be worn stretched out or loosely like loose socks, and since they cover the calves, they feel much warmer than ankle-length socks.


The material is thick enough to keep you warm even when you are on a cool floor. That said, they are not suitable for wearing with just-right size sneakers, boots, or tight-fitting bottoms. It is best to wear them at home.


One thing that bothered me was that the longer I use them, the more pilling they get. On the package, it says that while it has excellent heat retention properties, it also tends to form pilling due to friction. It may be a little troublesome to clean it with a hairball remover. But if you don't mind the appearance, it's not a problem.

The "Sock Supplement As If You Were a Kotatsu Sock" is a strong ally for feet that get cold all year round. Many online stores are sold out due to the popularity of this product, but I found them in the clothing section of a supermarket. I found them in the clothing section of a supermarket, so please check them out if you come across them.