Used the Bogs size chart and so ordered a 6, I normally wear 6. Not worth the $. Really happy with this purchase! Haines, stick with underwear only! I bought this bike as a starter exercise bike to see if Id like one and actually use it regularly. Plastic is to slippery to wear. They are high quality and the price is excellent. They just wouldn’t go on. These slippers were great for my Mom. This switch carrying case is fantastic!