Original BIRKENSTOCK footbed: anatomically formed Upper: Birkibuc Lining: suede Sole: EVA Details: double strap with toe loop and individually adjustable metal pin buckles KMYRI Birkenstock Kids' Mayari The Mayari's on-trend strap design is also functional. With the toe-loop and additional strap aiding for a better grip, this sandal stays on your little one's active feet. Complemented with the super comfortable and durable Birkibuc material, your kid would want to keep them on, all day long.