35 Below socks are unisex warming socks made with aluminized fibers woven into a soft knit. This 2-pair black pack is size Small/Medium and fits women’s shoe sizes 5–7 and men’s shoe sizes 6–8.

The aluminized threads are concentrated in the toe and foot area and are intended to help reflect body heat while the lightweight fabric stays flexible enough to wear by itself or as a liner under regular socks. Use them around the house, with winter boots, or for outdoor activity such as walking, hiking, or cold-weather work.

They are designed to be breathable and to help reduce dampness compared with bulky cotton socks. Care is simple: machine wash and tumble dry. This listing is the 2-pair black Small/Medium pack identified by UPC 600606597005. Jars, boots, and other footwear are not included. ( 91% Polyester, 5% Nylon, 2% Metallic, 2% Rubber)