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Model 284 is the most purpose-built dive strap in the Bonetto lineup. It has a thick, assertive profile with a pronounced wave pattern and a perforated body designed for ventilation and secure adjustment under real use. The rounded tip features Bonetto’s Tsunami motif, a detail long associated with professional Seiko dive watches.
This strap is designed for larger, heavier cases where stability matters more than subtlety. The substantial build, longer length, and reinforced keepers give Model 284 a planted, confidence-inspiring feel on the wrist, making it a strong match for modern tool and saturation-style dive watches.
Made in Italy from vulcanized NBR rubber. Waterproof, UV-resistant, and nonallergenic.
Model 284 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 maintaining controlled flexibility, allowing the strap to bend without feeling soft or unstable.
Compared to slimmer Bonetto models, this strap feels noticeably more substantial. The thicker profile adds structure and weight, helping it balance larger cases while remaining comfortable during extended wear. The matte surface resists lint and dust more effectively than many silicone straps and maintains a clean, utilitarian appearance.
Carries a light vanilla scent, typical of Italian-made vulcanized rubber.
Thickness: approx. 6.0mm→3.6mm (measured at lug end, tapering toward buckle)
Sheen: Matte
Buckle: Polished stainless steel
Taper by size:
Spring bars: Standard (free pair included)
Model 284 is designed for larger watches and heavier cases, with a thicker build and longer overall length than other Bonetto dive straps. The perforated design allows for secure adjustment while improving airflow, helping the strap remain comfortable despite its substantial profile.
This model is engineered to accommodate spring bars up to 2.5mm in diameter, making it well suited to dive watches that use thicker spring bars for added security.
For a deeper look at how rubber straps behave on the wrist, see our guide to rubber strap fit and comfort.
Length & wrist size:
140mm / 80mm (fits wrists approx. 7.75–8.75in)
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