Naturino Nappa Leather Sandals Quarzo combine a durable nappa leather upper with leather lining and insole for comfortable outdoor wear. Model: Quarzo (designer ID: QUARZO); the strap-and-buckle closure and non-slip sole make them practical for walks on varied surfaces. Key attributes: Gray | Grey | Nappa leather | Non-slip sole | Strap and buckle closure | Leather lining and insole | Composition & care: Leather (upper, lining, insole) | Rubber sole