The Alligator socks pictured here fit ladies sizes 9 through 11. They are made out of 75% acrylic and 25% nylon so they are easy to take on and off. The Alligator socks are super comfortable, and very versatile. They'll go with most outfits, dressy to casual, in summer and winter. They are a subtle attractive addition to your collection of footwear. The Alligator sock is a unique bit of hosiery that you'll love wearing so much, you might want to order an extra pair.