These big and tall four packs of work socks from the Professional Series are super soft and durable for all day wear. They promote healthy feet by helping with temperature and dryness. Made in the US, these socks are great for people who are their feet all day and may suffer from diabetes, edema, and leg fatigue. Other features include a truly non-binding stay-up comfort top, the iconic invisiseam ultra smooth, irritation-free toe seam, and a protective cushioning throughout the footbed. Socks fits shoe sizes 13-15.