Genuine Leather Watch Strap Band Cuff Butterfly Deployment Buckle Wrap Black 21*18mm Band material: Genuine leather Buckle/Clasp: Stainless steel butterfly deployment buckle/clasp Color: Black. Weight: 30g(approx). Thickness: 3.5mm(approx). Length of long side: 12.5cm(approx). Length of short side(not include buckle): 8.5cm(approx). Lug width: 21mm. Width at buckle: 18mm For watch straps of different color and size, please visit our shop.