The BIRKENSTOCK Rio model is a classic kids’ shoe. Designed back in the 1970s, it has been a laid-back summer companion for generations of children ever since. BIRKENSTOCK has reinterpreted the Rio sandal in stylish neon colors and high-quality synthetic material. Modeled on the cork sandal, it is made from the ultra lightweight and highly flexible synthetic material EVA. Anatomically shaped BIRKENSTOCK footbed in EVA Upper/lining/sole: one-piece EVA Details: shoe molded from a single piece, metal buckle, waterproof, washable, shock-absorbent, ultra lightweight “Made in Germany” Upper: EVA EVA (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. Insole: EVA Footbed material: EVA Outsole: EVA