The Men's Bitcoin Crew Socks in blue are a stylish and comfortable choice for casual occasions. Made from cotton and featuring a mid-calf length, these socks from Sock Club are machine washable and easy to care for. The crew sock style and novelty design make them perfect for the summer, fall, and spring seasons. With a one-size fit and a pack of one pair, these socks are a unique and fun addition to any man's wardrobe.