Feel good about your run. Lace up these women's running shoes, which are made of bio-based materials. The plant-based castor bean midsole provides the same high-performance, lightweight, responsive cushioning as Floatride Energy, and the BLOOM algae EVA foam sockliner adds comfortable cushioning. The upper is made of breathable, flexible eucalyptus tree textile and the natural rubber outsole is flexible and durable. Make each step count as you clock your daily miles and help support a sustainable future.