The Bonetto Cinturini Ref. 321 Black Tropic Rubber Strap are Made In Italy using natural rubber. What this means is that they are strong, supple and water resistant.
And because they are using natural rubber means they are not attracted to dust and particles (read: not lint magnet) as compared to lower quality silicon straps found outside.
The Ref. 321 Black Tropic Rubber Strap is a vintage style rubber strap which is modernized. Measuring 4mm thick and tapers to 3mm at the ends. Suits sports and diving watches perfectly.
Made in Italy
Material: Genuine Italian Rubber
Available in Black, Midnight Blue, Orange.
Buckle width: 22mm
Length: 80/130mm excluding buckle
Length to smallest hole: 55mm
Thickness: 4mm tapering to 3mm