The Classic HydroFlex™ is made from a single piece of FKM rubber, with our signature sailcloth pattern embossed directly into the surface. This gives it a soft, flexible feel from the first wear, along with waterproof performance suited to heat, sweat, swimming and everyday use.

The Classic Standard Sailcloth uses a traditional layered construction, combining an embossed synthetic upper with a leather base that’s coated with a thin layer of natural rubber. It has a firmer, more structured feel when new and gradually softens as it breaks in with regular wear.

Both feature the familiar fit and adjustment of a traditional tang buckle. Choose the Classic Standard Sailcloth for a more traditional, structured strap. If you’re after the very best we offer, the strap that defines our highest standards of comfort, waterproofing, and durability, then the HydroFlex™ Strap is our flagship.

The Classic HydroFlex™ and Loop-less™ HydroFlex™ share the same one piece FKM rubber construction, with our signature sailcloth pattern embossed directly into the surface. Both offer the same softness, flexibility, waterproof performance and durability.

The difference is the buckle system and how each strap wears. The Classic HydroFlex™ uses a traditional tang buckle with keeper loops, giving it a timeless appearance and the familiar adjustment of a conventional watch strap. The Loop-less™ HydroFlex™ uses a single fold deployant clasp with no keeper loops, creating a more streamlined profile and a different fastening experience.

Choose the Classic HydroFlex™ for a traditional buckle and familiar styling, or the Loop-less™ HydroFlex™ for a loop free design with a deployant clasp. The core performance is the same.

Classic HydroFlex™ straps sit at the top of our range for a reason. They use the same one piece FKM construction and sailcloth embossing process developed for our Loop-less™ HydroFlex™ range, paired with a traditional tang buckle and keeper loops. Months of R&D and prototyping went into refining this platform, with multiple iterations required to achieve the right balance of feel, fit and finish.

Classic HydroFlex™ brings that same proven construction, performance and meticulous finishing to a more traditional strap format.

You are not paying for a logo. You are investing in long term comfort, durability and a strap that feels as considered as the watch it is paired with.

Yes. This strap is available in a variety of lug width sizes (19mm through to 23mm) to suit most major watch brands, and comes fitted with quick-release spring bars for tool-free installation.

The Classic HydroFlex™ strap comes fitted with our premium tang buckle, with the option to upgrade to our RM Style Deployant Clasp. It is not compatible with the Loop-less™ deployant clasp, as that system is specifically designed for our Loop-less™ strap configuration.

Absolutely. Our HydroFlex™ range of straps are designed for optimal comfort, ensuring they flex with your wrist, so you can wear it from desk to dive with no irritation.

Yes. HydroFlex™ is waterproof, salt-proof, and UV-stable. It won’t absorb moisture, crack, or fade — built for real use, not just display.