Elastic gore for easy on & off. Original FitIconic KEEN fit with generous space across forefoot for toes to spread out. Eco Anti-Odor for natural odor control. Rubber sole is fused to the upper without glue for a more eco-friendly construction. Upcycled leather upper made from car seat scraps. Plant-based TPU outsole made with upcycled agricultural waste for lightweight durability and a lighter footprint. Gently brush leather with a soft bristle brush or hand towel to remove loose dirt and debris. Tough stains may require a leather cleaner.