Introducing the Birkenstock Kid’s Derry Boot – a colorful boot ready for the day’s adventure, no matter the weather. Keep feet dry and comfortable, even in the biggest puddles. The upper is made from extremely light and flexible EVA.Anatomically shaped BIRKENSTOCK footbed Upper/footbed lining/sole: one piece molded EVA Details: waterproof, washable, ultra lightweight Upper/Insole/Footbed material/Outsole: EVAEVA (ethylene vinyl acetate) is a high-quality, very light, elastic material with very good cushioning. As a result, it smooths out slight irregularities in the floor and ensures that every step is softly cushioned. Birkenstock Kid’s Derry Boot Yellow EVA