- Medium (08-24 months): 4.3" inch / US shoe size: 3-4
- Large (18-36 months): 5.5" inch / US shoe size: 6.5-8
- 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