Reebok is working to turn plant matter into a running shoe that it plans to release in autumn 2020 as part of the brand's commitment to reduce the use of petroleum-based plastics in footwear. The Forever Floatride Grow, as the shoe is called, revamps the Forever Floatride Energy and draws on the German brand's Cotton + Corn collection. The key is a midsole that is fashioned from sustainably grown castor beans and yet meets the performance standards of the original Forever Floatride. The upper, made of sustainably sourced eucalyptus, is biodegradable, strong and breathable. The odor-resistant sockliner derives from invasive bloom algae foam and the outsole from sustainably sourced natural rubber. According to Bill McInnis, vice president of Reebok Future, the brand has put three years of R&D into the Forever Floatride Grow. In addition to working on this literally green project, Reebok is looking for ways to eliminate virgin polyester from its material mix by 2024.