Original Cartier Straps are way too expensive: Here is the generic solution a high quality and Hand made genuine gator printed Calf Leather Strap for deployant Clasp, available in black ,dark brown,tan brown and Royal blue in 16 and 18 mm. 190 mm long, 3.3 mm thick at lug and 1.1 mm at the buckle end. The best quality you can get by jurgensgermany We stock them in 16 and 18 mm, black, dark brown, tan brown and Royal blue with matching stitching.