1950s: A Technical Breakthrough
The 1950s marked a turning point in watchmaking, as waterproof technology expanded the utility of watches to aquatic environments. Leather remained the strap material of choice, prompting the development of water-resistant treatments. Interestingly, stainless-steel bracelets—despite their durability—never claimed top popularity during this period.
1960s: Enter the TROPIC Strap
Rubber strap innovation began in the 1960s with the emergence of the TROPIC strap. While revolutionary, early versions were stiff, brittle, and uncomfortable against the skin. That’s when ISOfrane® challenged the status quo.
Inspired by Automotive Engineering
ISOfrane® introduced a breakthrough approach: leveraging the same rubber compound used in automotive tires—engineered to withstand heat, rain, ice, and chemical exposure without degrading. This durable material became the foundation for what would become the most resilient waterproof watch strap ever made.
Design Meets Functionality
ISOfrane® didn’t stop at durability. The brand pioneered comfort-driven design with wide ventilation slots for breathability and a textured underside that prevented sticking to skin. This combination of toughness and comfort redefined dive watch wearability.
ISOwhat?
Our original ISOfrane® watch bands were manufactured using a compound called isoprene. And just what is isoprene? Isoprene is a, liquid hydrocarbon that is obtained in the processing of petroleum and is used as a raw, chemical material. Isoprene was far more durable, and maintained its looks.
ISOfrane® today..
We used the best recipe, made it non-allergic, non-toxic and added even more durability and softness to rubber WITHOUT using silicon (the dust magnet) to bring back the legendary ISOfrane® dive watch band, which is possibly the best watch strap you’ll ever buy.
