Birkenstock White Double Strap Sandals Size 39 (8-8.5). Constructed from an ultra-lightweight EVA material, similar to the foam that running shoes are made with, the Arizona EVA Sandals cushion and support your every step. With two adjustable straps, you'll enjoy a more secure fit. Most importantly, rubber BIRKENSTOCKs are waterproof. EXCELLENT CONDITION! Only worn inside. Smoke Free Home