Twill reinforcement is a woven natural-fibre fabric designed for bio-composite manufacturing where strength, surface stability, and a controlled structural pattern are required. The twill formation allows fibres to move in a uniform, angled pattern, giving moulded components improved drape and resilience. This makes it well suited for panels, product casings, interior elements, and parts that need predictable shaping during layup. When combined with a compatible binder, the reinforcement forms a stable composite layer with balanced rigidity and tensile behaviour. Rubisco’s twill is developed for teams exploring natural-fibre composites that offer reliable performance and clean material pathways.