The Sonar Surf is an open toe mid-heel sandal with a stretchy neoprene mesh upper, a velcro ankle strap, and signature pull loops. The mix of sporty materials and dressy elements offers a comfortable fit and a flattering silhouette. Size & Fit - Standard Fit. Heel Height - 60mm/2.4in. Neoprene and neoprene mesh fabric upper with nylon webbing. Neoprene fabric lining. Leather footbed. Rubber outsole