The Reef Grom Smoothy. For the little guys and gals in the family. Same comfort arch support as the Mens style. INFANT SIZES ARE (from smallest to largest): 3/4, 5/6, 7/8, 9/10. These come with an optional elastic backstrap (as pictured) to keep sandals on tiny feet KIDS SIZES ARE (from smallest to largest): 11/12, 13/1, 2/3, 4/5. These do not come with elastic backstrap Please see sizing chart and information below for assistance in ordering the correct size..