Blacksocks is a European sock subscription service and online retailer. For an annual subscription price, customers receive three pairs of socks three times a year. The socks come in a limited variety of sizes and styles, with options such as calf socks, knee socks, and silk cashmere socks. The socks are manufactured near Milan, Italy using extensive manufacturing processes to ensure durability and consistency. The company has also expanded into a line of underwear and t-shirts, as well as offering athletic and ski socks. Blacksocks has 60.000 active customers, primarily in France, Germany, and Switzerland, and, as of March, 2009, the company maintains a growing presence in the United States