Flexible foams contain algae biomass and bio-based additives, joined with EVA, characterised by a renewable content of at least 45%. The algae are harvested from waterways—like lakes, rivers, and ponds—at risk of heavy algal blooms. Algae biomass acts as a natural polymer, and when combined with foaming ingredients, the result, in many cases, is improved technical performance over conventional flexible foams. Find employment in the manufacture of footwear, braces, toys and sport accessories.