Bonetto Cinturini 20mm Black Rubber Watch Strap Model 325 Imported Made in Italy from vanilla-scented Italian rubber (not silicone) Bonetto Cinturini produces OEM rubber dive straps for many of the world's most famous watchmakers Waterproof, non-toxic and non-allergenic; resistant to salt and UVA rays Fitted with an 18mm polished stainless steel buckle To determine your strap size, measure the distance (in millimeters) between the lugs of your watch