Keen WK400 Makes walking feel like rolling. Our men's walking shoe, powered by KEEN.CURVE technology. Eco Anti-Odor KEEN.CURVE Higher-traction rubber outsole Multi-directional lug pattern provides superior traction KEEN.CURVE provides a constant curve from toe to heel for nonstop propulsion Two-finger webbing loop on the heel for easy pull-on Full-length nylon plate for added stability Eco Anti-Odor for natural odor control Contoured Fit–Follows foot's contours for a more secure fit MATERIALS Performance mesh upper with TPU overlays for durability Offset lacing relieves pressure on top of your foot Breathable mesh lining Removable PU insole for long-lasting comfort CARE Gently brush with a soft, damp sponge to remove loose dirt. Treat stains right away with a gentle cleaner. Air dry away from heat.