The BIO SKI is a composite alpine ski, designed and manufactured using bio-derived material that reduces negative environmental impacts but maintains comparable ski performance. Natural flax fibres and a bio-derived epoxy resin replace traditional fibreglass components. Tensile and flexural material properties were tested and optimized, and prototype geometry and performance characteristics were measured and compared to existing alpine skis. The BIO SKI proves that natural fibres and products are viable material alternatives in composite manufacturing.