Birkenstock Rotterdam Synthetic Unisex Slides SandalsWhen it comes to comfort and healthy feet, Birkenstock needs no introduction. Being a call for high quality, the new Rotterdam open back sandals are perfect for everyday wear. With a clean, adjustable design, these slipper sandals are a year round favourite. Soft and durable synthetic upper. Breathable microfibre lining for comfort. Soft textile lined insole for cushioning and support. Slip on construction with hook and loop straps for comfortable