Most Women's (Ladies) Heat Holders® Socks fit women's shoe sizes 5-9 inclusive and are available in Crew and Long lengths and Original, Lite and Ultra Lite warmth levels. If you need a larger size, shop the Men's styles for sizes 8-13. The Slipper styles have a no-slip grip on the bottom for traction on indoor hard surfaces such as wood or tile. Choose a style to buy now! All styles available in multiple colors!