A lightweight and waterproof footwear, the Birkenstock® Kids Derry Boots keep your little one safe and protected. Molded EVA upper. EVA lining and footbed. Pull-on style. Round toe design. Signature brand detailing on the side. EVA outsole. Imported. Measurements: Weight: 4 oz Circumference: 11 1⁄4 in Shaft: 7 2⁄5 in Product measurements were taken using size EU 29 (US 11-11.5 Little Kid), width Regular. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.