Keen Men's Vista Energy Mid Carbon Toe Work BootDesigned with KEEN. ReGENs proven midsole cushioning, offering 50% energy return with every step, a breathable mesh upper, carbon fiber toes, and the KonnectFit heel capture system, this work sneaker isnt only the comfort youve been looking for, its the performance you need. Product Highlights: Breathable, non metallic, and lightweight comfort Ideal Work Environments: Indoor Hard, flat walking surfaces Long periods of standing or walking Ideal Job