These Mizuno leg warmers keep your feet warm with a double-layer construction of heat-retaining padding and an aluminum sheet. Although I'm a woman, I used to wear these in the office when working in thin clothing like suits, and also when watching my children's sports games, but I no longer use them because my lifestyle has changed. Besides, it doesn't snow much in my area anymore... They are lightweight and easy to carry, making them comfortable to use at home, while teleworking, or when traveling. Recommended points | Aluminum sheet & padding Color | Black Country of origin | China Material | 100% Polyester Size | 30cm