“Irregular Stock” or “Sold As Is” identifies a product that is price reduced, but still functional.
Size chart:
Medium Socks:
Men's US Shoe Size - 5 - 9.5
Women's US Shoe Size - 6 - 10
Large Socks:
Men's US Shoe Size - 9 - 12
Women's US Shoe Size - 10 - 13
X-Large Socks:
Men's US Shoe Size - 12-15
Women's US Shoe Size - 13+