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Model 281 is a slim, vintage-leaning rubber strap inspired by dive watch designs of the 1960s. The profile is tapered and lightly contoured, with a slanted tail that gives it a more refined, period-correct look than most modern rubber straps.
A mix of round and ladder-style perforations provides ventilation and flexible adjustment while reinforcing the retro character. Compared to heavier dive rubbers, Model 281 wears lighter and more streamlined, making it a strong match for vintage divers and slimmer tool watches.
Made in Italy from vulcanized NBR rubber. Waterproof, UV-resistant, and nonallergenic.
Model 281 is made from vulcanized nitrile butadiene rubber (NBR), selected for its durability, flexibility, and resistance to seawater and sunlight. The vulcanization process strengthens the material while keeping it supple, allowing the strap to bend easily without feeling soft or unstable.
The surface has a matte finish that resists lint and dust more effectively than many silicone straps. On the wrist, the strap feels flexible and controlled, with enough structure to stay secure while remaining comfortable for extended wear.
Carries a light vanilla scent, typical of Italian-made vulcanized rubber.
Thickness: approx. 4.0mm→2.0mm (measured at lug end, tapering toward buckle)
Sheen: Matte
Buckle: Polished stainless steel
Taper by size:
Spring bars: Standard (free pair included)
Model 281 is a tapered strap with a slimmer overall profile than many modern dive straps. The perforated design allows for fine adjustment and improved airflow for comfort even in warm conditions. The buckle uses a distinctive 8mm tang.
Lug fit varies by size:
This strap accommodates spring bars up to 1.5mm in diameter.
For a deeper look at how rubber straps behave on the wrist, see our guide to rubber strap fit and comfort.
Length & wrist size:
127mm / 78mm (fits wrists approx. 7.5–8.5in)
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