This strap is in genuine ostrich-style calfskin, brown "GOLD" with white stitching, very durable, this is the type of strap that Jaeger Lecoultre uses on its Réverso. The quality of this French manufacturing ensures waterproof leather, resistance to perspiration, a nickel-free clasp, an hypoallergenic lining (in accordance with the BGBL law, 1992, I, P, 866), color fidelity as well as a safety seam on the loops. Even a combination of high heat, humidity and sweat has no effect on the elasticity and shape, as well as the suppleness and sleek appearance of these genuine ostrich-style calfskin leather straps. In order to meet these requirements, the materials are carefully selected and given a perfect finish. It fits all types of watches with pump handles. Note that this strap is 24 mm at the.