Introducing Prepreg for “Soft Composites”.

A New Building Material. A New Perspective.

Carbon Fiber Apple Watch Band made from Diamond Down- A Carbon Fiber Prepreg for “Soft Composites”.

What is Diamond Down?

Diamond Down is a prepreg “soft composite” fabric designed for applications beyond the industries current rigid and hard composite parts: a new perspective and a new way to build composite parts that retains all the structural characteristics of the composite materials, but in a soft and flexible form.

Carbon fiber, glass, and Kevlar are infused with a special compound making the fabric usable for building “soft composite” parts and products. Learn more about this new flexible perspective on composite building materials at JEC World 2026.