Borealis, Infinium, and Fullstride Ventures have developed a high-performance foam for the fashion industry using captured CO₂ emissions. The first application is Fullstride’s carboncup™ bra cup, offering the same comfort and durability as conventional foam but with a significantly lower carbon footprint.

The process starts by capturing waste CO₂, which Infinium converts into e-Naphtha, a low-carbon alternative to fossil naphtha. Borealis then polymerises the e-Naphtha into polyethylene, which is processed into foam using existing manufacturing and recycling systems.

Produced at Infinium’s ISCC PLUS-certified Project Pathfinder facility in Corpus Christi, Texas, the material enables traceable, sustainable feedstock use. The collaboration demonstrates a practical pathway to circularity in intimate apparel, keeping carbon in use while reducing reliance on fossil resources.

The carboncup™ marks the first commercial output of this partnership, showing how cross-industry collaboration can create low-carbon, high-performance materials for delicate applications