Netherlands child black birkenstock closure: buckle lining: microfiber insole: cork reference size: 31 fit: regular, narrow birkenstock children's sandals made of microfiber with adjustable buckle closure and a thick rubber sole that is highly comfortable and resistant. Breathable and lightweight, these shoes ensure grit and freshness even on the hottest days and are versatile and easy to match. They are characterized by a modern and trendy style.