The Kid's Lil Shimmer sandal by Cobian features a synthetic leather upper with a metallic shimmer, low profile base with arch support, and lightweight, squishy EVA top sole.Cobian labels the sandal sizes as 11/12, 13/1, 2/3, and 4/5. To order a 11/12, select size Toddler 11. To order a 13/1, select size Toddler 13. To order a 2/3, select size Youth 2. To order a 4/5, select size Youth 4.