As the name suggests. This is a legitimate Polartec product. They're thin enough not to get in the way of my shoes, but still just enough to insulate my feet. I haven't had any irritation and they are comfortable enough to wear without socks but are designed to be worn with light socks or inserts. They also breathe pretty well and don't retain any odor after washing. They are ideal for those who do not wear insulated shoes and want to improve the performance of shoes that are already insulated. A downside if you think Polartec air dries. Only. With them you can not use hot drying at all. In case you are wondering, they are made in Ukraine. Definitely I recommend them as they are cheap but groundbreaking.
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