This shoe was gently tried on and shows slight signs of use. Injected EVA foam upper is more water-friendly & more durable than others of its kind External rear heel sling BLOOM performance midsole foam is made of 10% algae biomass, transforming green water into clean water in the process FloatPro Foam midsole for a lightweight ride that lasts | Merrell is focused on merging performance, styling, and comfort to empower all people to confidently explore the outdoors | Merrell Air Cushion in the heel absorbs shock and adds stability (11869/125)