Ponda Raises $2.4M to Scale BioPuff, the Plant-Based Insulation Grown From Wetlands

November 24, 2025

Ponda, the Bristol-based biomaterials company, raised $2.4 million (£1.8 million) in a seed funding round in November 2025, in an oversubscribed round co-led by Faber (Lisbon) and Counteract (London), with participation from PDS Ventures, Evenlode Impact, and the Royal College of Art. The raise brings Ponda’s total financing to approximately $6.5 million, combining venture capital with non-dilutive support from Innovate UK, the H&M Foundation’s Global Change Award, and King Charles III’s Terra Carta Design Lab. The funding will accelerate production scale-up, expand Ponda’s European wetland farming network, and support commercial BioPuff launches for Autumn/Winter 2026 collections. Ponda was founded in 2020 by Julian Ellis-Brown and co-founders who met through the Innovation Design Engineering double Master’s programme run jointly by Imperial College London and the Royal College of Art.

The textiles industry has a deep and largely unresolved materials sustainability problem. The dominant insulation materials used in outdoor apparel, sleeping bags, home textiles, and soft goods are either synthetic — typically polyester fibres derived from petroleum — or animal-derived, principally goose and duck down. Both carry significant environmental costs. Synthetic insulation is cheap and water-resistant but is a major source of microplastic pollution throughout its lifecycle, from production through washing to end-of-life. Down insulation offers exceptional thermal performance, but its production is associated with animal welfare concerns and its supply chain is geographically concentrated and opaque. Neither material does anything positive for the landscapes from which it comes; both accumulate as waste at end of life without meaningful circularity.

BioPuff, Ponda’s flagship product, is made from Typha — commonly known as bulrush or cattail — a fast-growing wetland plant cultivated through paludiculture, the sustainable agricultural practice of rewetting and cultivating drained peatlands. The product’s design is elegant in its regenerative logic: degraded peatlands, of which there are hundreds of thousands of hectares in the UK alone and millions globally, are currently a significant source of carbon emissions, releasing approximately 2 gigatonnes of CO₂ annually as the dried-out peat oxidises. By rewetting these landscapes and growing Typha on them, Ponda converts a carbon source into a carbon sink — while producing a commercially valuable insulation fibre as the output. The company estimates that cultivating Typha on rewetted peatlands can avoid up to 30 tonnes of CO₂ equivalent per hectare per year. BioPuff achieves comparable thermal performance to goose down while being significantly cheaper, naturally hydrophobic, and biodegradable.

Ponda’s Bristol facility now operates at multi-tonne production scale, and the company has already partnered with major brands including Berghaus, Stella McCartney, Parley for the Oceans, and Sheep Inc to develop garments and demonstrate BioPuff’s performance in real-world applications. In 2025 alone, Ponda harvested 12 tonnes of material, up from 3.5 tonnes in 2022. The company’s ambition is to create the world’s largest paludiculture pilot — a 100-hectare wetland system capable of producing enough fibre for approximately 100,000 jackets annually.

Counteract’s Matt Isaacs described the Ponda team as embodying “the rare combination of deep scientific expertise and visionary regenerative leadership,” and Faber’s Rita Sousa cited the company’s unique position at the intersection of clean manufacturing, regenerative agriculture, and advanced materials. The Royal College of Art’s participation as an investor reflects an unusual and meaningful signal: an academic institution backing a company that emerged from its own research programmes to commercialise materials innovation at global scale.

Sources