The Lab-Grown Sweater represents a revolutionary step in textile development, made from an entirely new type of molecularly engineered biomaterial. Developed by Vollebak in collaboration with Spiber Lab, this sweater is not just knitwear; it’s a demonstration of what’s possible when biology meets advanced manufacturing. If it looks as though it has been cultivated in a petri dish and assembled by machines, that’s because it has.

Traditionally, almost all clothing has been created from three primary categories of materials: plastics, plants, and animals. Vollebak is known for challenging these conventions by pushing the boundaries of what we wear. In recent years, they’ve introduced garments incorporating copper, graphene, aerogel, stainless steel, carbon fibre, and even materials derived from hypersonic space parachutes. Now, they take an additional leap forward with the introduction of their first biomaterial garment—the Lab-Grown Sweater.

Biomaterial Engineering: Beyond Conventional Textiles
This new biomaterial was grown in a lab, and the resulting sweater was then knitted by robotic machines. It is available in two versions—a Black and White edition, and a Dark Brown edition—and comes complete with a matching scarf and beanie. What sets this fabric apart is the molecular engineering that allows it to imitate the luxurious softness typically associated with natural fibres like cashmere or silk. Additionally, the items are fully reversible, showcasing unique honeycomb patterns and textures that highlight the complexity of the engineered biomaterial.

The Lab-Grown Sweater is made using Brewed Protein, a proprietary biomaterial developed by Spiber. The creation process involves selecting DNA sequences from a broad database, containing the genetic profiles of various animals and insects, ranging from sheep and spiders to squids and crickets. These sequences are introduced into microorganisms, effectively programming them to produce desired protein structures. The microorganisms are cultivated with sugar, which they convert into protein polymers, thus producing a biomaterial entirely different from anything seen before in the textile industry. This biomaterial is then blended with Merino wool, creating a soft yet durable yarn that retains the benefits of both fibres.

Implications for Design and Sustainability
For designers and architects interested in material innovations, the Lab-Grown Sweater offers a glimpse into a future where materials are cultivated and manufactured with precision at the molecular level. This approach to material engineering could transform industries beyond fashion—from interior design to product development—where high-performance, sustainable, and biobased materials are in increasing demand.

The biomaterial used in this sweater emphasizes the potential for a circular economy in textiles. By cultivating materials in a controlled environment rather than extracting resources from the natural world, the environmental footprint can be significantly reduced. Brewed Protein production, for instance, has the potential to achieve a 79% reduction in greenhouse gas emissions and a 97% reduction in land use and water consumption compared to traditional fibres like cashmere. This aligns well with sustainability goals, particularly the push towards reducing reliance on petrochemicals and animal products, thereby offering new opportunities for biodesign and responsible material sourcing.

Vollebak’s Lab-Grown Sweater demonstrates the possibilities that arise when technology, biotechnology, and design intersect. It serves as an inspiring example of how material innovation can support creative disciplines in their pursuit of both functionality and sustainability.

Source: Vollebak
Photos: Vollebak