- Medium (06-18 months): 4." inch / US shoe size: 2.5T-5T
- Large (18-36 months): 5.5" inch / US shoe size: 5T-7T
- XL (3-6 years): 6.5"inch / US shoe size: 8.5-10
- Adult - Small: 8" inch / US Women's Shoe Size: 6-7.5
- Adult - Medium: 9" inch / US Men's Shoe Size: 7.5-9