Birkenstock Unisex Clog Boston EVA Navy - New With Box- Free 。The Birkenstock Boston Elemental Blue EVA sandals in size EU 42 (US Woman’s 11/US Men’s 9) are a stylish and comfortable slip-on option for both men and women. Made with durable EVA material in a sleek blue color, these sandals are perfect for everyday wear. The regular width ensures a comfortable fit, while the brand\'s reputation for quality and support makes them a reliable choice for those who value both style and functionality in their footwear. Whether you\'re running errands or just hanging out, these sandals are a practical and fashionable choice.