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Model 328 adapts the familiar military G10 layout into a rubber construction. The two-layer design keeps the watch securely mounted while maintaining a slim, low-profile appearance on the wrist. A fine ribbed surface adds subtle texture without introducing the sculpted shapes typical of dive straps.
The layout can also be converted to a single-pass configuration by removing the secondary strap piece and keepers. This makes the design flexible: it can be worn in the traditional G10 style for added security or simplified for a cleaner, lighter profile.
Model 328 is made from vulcanized nitrile butadiene rubber (NBR), a material chosen for its durability, flexibility, and resistance to seawater and sunlight. The vulcanization process strengthens the rubber while preserving a controlled, supple feel.
The strap is constructed from two thin layers of rubber, each about 1.5mm thick, creating a structure that bends easily around the wrist. The finely ribbed texture provides subtle grip and visual definition while remaining understated compared to heavily patterned rubber straps. Sandblasted stainless steel hardware reinforces the utilitarian character and keeps reflections muted.
Thickness: approx. 3.0mm
Sheen: Matte
Buckle: Matte stainless steel
Spring bars: Standard (free pair included)
Bonetto Cinturini military G10 rubber straps use a fixed-length design with adjustable hardware to set the fit on the wrist. Excess strap length is folded back and secured rather than trimmed. Because the rubber is more structured than fabric straps, the folded section sits best when worn snug and properly adjusted, resulting in a clean, balanced fit on the wrist.
Length & wrist size:
Fits wrists approx. 6.5–8.0in
20mm strap width fits:
22mm strap width fits:
Water resistant, suitable for brief exposure but not intended for swimming or prolonged contact with water.
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