Handcraft!! 21mm Alligator Crocodile Grain Genuine Leather Watch Band Strap & 18mm S/S Tang Buckle for Omega 100% Hand Made & Hand Stitch as Usual No Machine This strap is made by genuine cow leather , it will be soft after using . It fits the watch with 21mm lugs Special for IWC,Omega, Cartier, Longines watches