Fullstride Ventures unveils carboncup™, the first bra cup made with CO₂-based foam in collaboration with Borealis and Infinium

Fullstride Ventures unveils carboncup™, the first bra cup made with CO₂-based foam in collaboration with Borealis and Infinium

(IN BRIEF) Fullstride Ventures has introduced the carboncup™, the first bra cup made with a sustainable foam derived from captured carbon dioxide emissions. Developed in partnership with Borealis and Infinium, the innovation uses Infinium’s eNaphtha—a low-carbon feedstock produced from CO₂ at the company’s ISCC PLUS-certified Texas facility—to create high-performance polymers. Borealis transforms the eNaphtha into polyethylene, which is used to manufacture foam that meets the comfort and durability standards of intimate apparel while lowering its carbon footprint. The carboncup™ is the first commercial product from the Borealis–Infinium collaboration announced in 2024 and demonstrates how captured carbon can be repurposed to support circularity in fashion. Samples will be on display at K Show 2025 in Düsseldorf.

(PRESS RELEASE) VIENNA/ SACRAMENTO/ NEW YORK, 24-Sep-2025 — /EuropaWire/ — Fullstride Ventures, in collaboration with Borealis and Infinium, has unveiled the carboncup™, a next-generation foam bra cup that combines sustainability with the same comfort, breathability, and durability as traditional alternatives. The innovation, revealed ahead of K Show 2025 in Düsseldorf, represents a major step toward circularity in the intimate apparel sector and demonstrates how captured carbon can be transformed into high-value consumer products.

The carboncup™ is produced through a multi-stage process that begins with Infinium’s proprietary technology, which captures waste carbon dioxide (CO₂) that would otherwise enter the atmosphere. This CO₂ is converted into eNaphtha, a certified low-carbon alternative to fossil-based naphtha. Borealis then polymerizes the eNaphtha into polyethylene, creating the raw material for the new high-performance foam. The result is a sustainable product that can be processed using existing manufacturing and recycling infrastructure while significantly reducing carbon emissions compared with conventional fossil-based polyurethane pads.

Image: The production process from CO2 that is captured from the atmosphere to foam cups. © Fullstride

“This innovation not only reduces our reliance on fossil resources but also lowers the carbon footprint of our products,” said Yossi Nasser, CEO of Fullstride. “The carboncup™ is proof that sustainability and performance can coexist, and it marks an important milestone for sustainable fashion.”

Infinium is among the first companies to produce eNaphtha at commercial scale, delivering the feedstock from its ISCC PLUS-certified Project Pathfinder facility in Corpus Christi, Texas. This certification ensures transparent traceability of the sustainable material throughout the supply chain. “By transforming captured carbon into eNaphtha, we’re enabling Borealis to produce plastics with a much smaller footprint,” explained Robert Schuetzle, CEO of Infinium. “Together with Fullstride and Borealis, we’re demonstrating how collaboration across industries can accelerate the path to a cleaner future.”

Borealis emphasized the importance of applying circular solutions to sensitive consumer applications such as intimate apparel. “This project shows how atmospheric carbon can be turned into high-quality polymers that meet demanding standards,” said Dirk Langhammer, VP Circular Economy Solutions at Borealis. “It’s another step toward helping our customers meet their sustainability goals while driving systemic change.”

The carboncup™ is the first commercial application of this new CO₂-based foam material, marking a breakthrough in the use of circular feedstocks for textiles and apparel. Its launch highlights the progress achieved since Borealis and Infinium first announced their partnership in August 2024. Samples of the carboncup™ will be showcased at K Show 2025, Düsseldorf, Germany, from 8–15 October, Hall 6, Stand A43.

Media Contacts:

Borealis
Borealis Group Media Desk
Tel: +43 1 22 400 899 (Vienna, Austria)
E-mail: media@borealisgroup.com

Infinium
E-mail: press@infiniumco.com

Fullstride Ventures
E-mail: hello@fullstrideventures.com

SOURCE: BOREALIS