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Bonetto Cinturini 281 Rubber Watch Strap - Black

Made in Italy from vulcanized NBR rubber. Waterproof, UV-resistant, and nonallergenic.

$45.00
Unsure about fit? Find your strap size
Strap width:18mm
Ships same or next business day  • Free U.S. shipping over $49  • Easy 60-day returns

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.

Material & feel

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.

Sizing & specs Length, taper, spring bars, buckle finish and more

Length:

127mm / 78mm (fits wrists 7.5–8.5in)

Measurements exclude the buckle.

Taper:

  • 18mm lug / 18mm buckle
  • 20mm lug / 20mm buckle
  • 22mm lug / 20mm buckle
Spring bars:
Standard (free pair included)
Buckle:
Polished stainless steel
Thickness:
4.0mm→2.0mm (lug end to buckle)
Sheen:
Matte
Apple Watch:
22mm fits Apple Watch with strap adapters
Fit guidance

Model 281 has a tapered profile. The buckle uses a distinctive 8mm tang. Lug fit varies by size:

18mm and 22mm have straight lug ends
20mm features notched lug ends for a closer fit on certain cases

Popular watch pairings

20mm strap width fits:

  • Glycine Combat Sub 39
  • Hamilton Khaki Field
  • Omega Seamaster Diver 300M
  • Omega Speedmaster Professional
  • Rolex Submariner
  • Sinn 104

22mm strap width fits:

  • Orient Kamasu
  • Orient Ray II
Wear & care

Swim ready, suitable for swimming and regular water exposure.

Clean with lukewarm water and mild soap as needed. Rinse thoroughly and allow to air dry fully. Avoid solvents, abrasives and petroleum-based cleaners.

About the brand

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.

Shipping

Orders placed by 2:00pm PST on business days typically ship the same day.

Tracking is included with every order and emailed at shipment.

United States

  • USPS Ground Advantage: free on orders over $49, or $5.95 on orders up to $49. 3 to 6 business days.
  • USPS Priority Mail: $9.95. 2 to 4 business days.
  • USPS Priority Mail Express: $25.95. 1 to 3 business days.

International

  • USPS First Class International: $17.95. 10 to 21 business days.

For complete shipping details, see our Shipping Policy.

Returns & exchanges

Unused items may be returned or exchanged within 60 days of purchase.

Please contact us before sending an exchange.

For full return details and instructions, see our Returns Policy.

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