Nikola Hybrid SlingbackProduct Details Style Number CM757 Measurements 5. 5cm heel Features Leather upper Leather lining and footbed Rubber outsole Buckle closure Editor's Note A sporty twist on a classic style, our smooth leather Nikola slingback combines form and function with a comfortable padded footbed and a durable rubber outsole. A sleek day to night design, the pointed toe silhouette is finished with a walkable sculpted heel and our tonal Signature for a heritage