FKM is used to describe Fluoroelastomers which provide a higher degree of heat and chemical resistance. At the same time, it offers the user a supple and pleasant hand feel. The recent introduction of FKM into high-performance watchmaking sees it used as the material of choice in some of the most exclusive Swiss watch brands today. In the form of a Nylon strap, Spinnaker now offers an incredibly versatile durable piece of equipment to be added to the Spinnaker dive watch.