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Model 325 has a classic dive-style look, with smooth rubber, sculpted edges, and contrast stitching that gives it a clean, sporty presence. The shape is familiar and uncomplicated, without the sharper lines or molded patterns found on more technical designs.
It’s the only Bonetto model we carry with visible stitching, which adds definition without making the strap feel busy. Double keepers keep the layout simple and tidy once the strap is on the wrist.
Made in Italy from vulcanized NBR rubber. Waterproof, UV-resistant, and nonallergenic.
The rubber has a matte surface and a firm, flexible feel that wraps the wrist easily while holding its shape. The raised stitching adds a small amount of texture but remains comfortable against the skin, giving the surface a bit of visual interest without changing how the strap wears.
Carries a light vanilla scent, typical of Italian-made vulcanized rubber.
Thickness: approx. 5.0mm→3.5mm (measured at lug end, tapering toward buckle)
Stitching: White
Sheen: Matte
Buckle: Polished stainless steel
Taper by size:
Spring bars: Standard (free pair included)
Model 325 is cut slightly shorter than most Bonetto straps, which works well for smaller wrists or for anyone who prefers less excess length. The double keepers help keep the tail under control during daily wear.
For a deeper look at how rubber straps behave on the wrist, see our guide to rubber strap fit and comfort.
Length & wrist size:
115mm / 75mm (fits wrists approx. 6.5–7.25in)
Measurements exclude the buckle.
Apple Watch: The 22mm width is compatible with Apple Watch when used with our strap adapters.
Water exposure: Waterproof, designed for prolonged water exposure including swimming and diving.
For routine care, rinse with lukewarm water and mild soap as needed. Rinse thoroughly to remove residue. Avoid solvents, petroleum-based cleaners, and abrasive materials, as these can damage the rubber. Dry with a soft cloth and allow the strap to air dry completely before wearing.
Bonetto Cinturini is an Italian manufacturer with more than forty years of experience producing rubber watch straps for professional and everyday use. The brand specializes in straps made from vulcanized nitrile butadiene rubber, selected for its durability, flexibility, and resistance to seawater and UV exposure.
Bonetto Cinturini straps are widely used by watch manufacturers and enthusiasts who value long-term performance, comfort, and straightforward, functional design.
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Independent watch strap specialist since 2007