A New Chapter for Sustainable Stretch
At the Global Fashion Summit 2026 in Copenhagen, held under the theme ‘Building Resilient Futures,’ Hyosung TNC — the world’s largest spandex manufacturer by market share — unveiled the full scope of its integrated bio-based spandex platform. Backed by nearly $1 billion in infrastructure investment, the company’s new production system in Vietnam converts sugarcane-derived feedstock into Bio-BDO, Bio-PTMG, and ultimately Bio Spandex within a single connected value chain. For brands and retailers sourcing from any swimwear manufacturer, the announcement signals that bio-based elastane is no longer a niche experiment — it is entering large-scale commercial reality.
Beyond Recycled: Why Bio-Based Matters
During the Summit’s decarbonisation panel, Hyosung TNC Vice President of Marketing Sora Yoo addressed a critical limitation the textile industry has been hesitant to confront: recycled spandex alone cannot meet the sector’s growing sustainability demands. Most low-impact elastane today is pre-consumer recycled — still fossil-derived at origin, with supply constrained by the volume of manufacturing waste available. Hyosung TNC recognised this ceiling early, and the conclusion was clear: a genuinely lower-impact stretch fibre requires a fundamentally different raw material pathway. The Vietnam facility represents exactly that — a closed-loop system where renewable sugarcane replaces petroleum as the foundational input, without sacrificing the durability, elongation, and recovery properties that OEM swimwear production demands.
From a manufacturing perspective, this development is particularly significant. Swimwear factories rely on spandex that performs consistently across high-speed cutting, stitching, and bonding processes. Any alternative fibre must meet the same technical benchmarks as conventional elastane, and Hyosung TNC’s message at the Summit was unambiguous: bio-based spandex delivers comparable performance. For wholesale swimwear buyers assessing future supplier partnerships, this eliminates a key objection that has historically slowed sustainable material adoption.
Infrastructure, Sourcing, and the Price Question
Hyosung TNC’s Summit presentation emphasised three pillars underpinning the bio-spandex transition: industrial-scale infrastructure, verified sourcing through the VIVE platform, and long-term value chain collaboration. The company also addressed price perception — perhaps the most persistent barrier to broader adoption. Sora Yoo noted that scaling sustainable alternatives will require not only cross-industry partnerships but also greater consumer awareness and willingness to prioritise environmental impact alongside cost. A swimwear manufacturer integrating bio-based spandex into production lines must weigh these dynamics carefully, but the direction of travel is unmistakable. The Summit also featured the premiere of a BBC StoryWorks-produced film tracing the journey from sugarcane field to finished fibre, reinforcing the narrative that transparency and storytelling are becoming as important as the material itself.
What This Means for Swimwear and Performance Apparel
Hyosung TNC identified activewear, sportswear, denim, underwear, and swimwear as key categories poised to benefit from bio-based stretch. Swimwear occupies a particularly interesting position: it is inherently performance-driven, worn against the skin, and increasingly scrutinised by environmentally conscious consumers. As large-scale sustainable swimwear production becomes more viable, brands that move early to incorporate bio-based spandex into their collections stand to differentiate themselves in a competitive wholesale market. The Global Fashion Summit 2026 made one thing clear — the infrastructure is now in place, the sourcing is verifiable, and the material transition away from fossil-based stretch is no longer a question of if, but of how quickly the industry chooses to embrace it.