23mm Black leather Band Strap with Clasp replacement for Cartier Santos 100XL Strap is 23mm width at the lug side, 21mm at the clasp side Thickness: 8.5mm lug side / 1.8mm buckle side Length: 115mm + 115mm (4.5" + 4.5" ) approx. without buckle Deployment clasp: 21mm