Keen WK400 Textile Men's Low Top Tangerine TrainersOur feet move in a steady arc while we walk, yet our shoes are mostly flat. It's our first shoe designed from the ground up for active walking, with a distinctive rolling sensation and forward propulsion. The men's WK400 shoe makes walking more enjoyable, whether you're trekking the Coast Path, driving up to a viewpoint with friends, or commuting by foot. Performance mesh upper with durable TPU overlays. Breathable mesh lining for comfort and support.