Higher-traction rubber outsole. Slip-on design for easy on and go. Recycled PET plastic. Eco Anti-Odor for natural odor control. Original Fit�CIconic KEEN fit with generous space across forefoot for toes to spread out. Upper contains recycled PET plastic bottles. Lace-lock bungee system. Removable PU insole for long-lasting comfort. Non-marking rubber outsole leaves no trace. Gently brush with a soft, damp sponge to remove loose dirt. Treat stains right away with a gentle cleaner. Air dry away from heat.