New!!! Birkenstock Size 37 / 6-6.5 US / Arizona Eva Multi Color White Black Gold, Never Worn, Made from ethylene vinyl acetate EVA (ethylene vinyl acetate) is a high-quality synthetic material with a wide range of positive attributes. It is ultra-lightweight, highly elasticated, shock-absorbent, waterproof, and skin-friendly – and offers the level of comfort you have come to expect from BIRKENSTOCK