Men's Irish Setter by Red Wing Nisswa 83126 Work Shoes The Nisswa puncture resistant safety toe oxford combine an updated, modern look with a long list of advanced features that protect you all day long. Ideal for light duty work, this shoe is CSA approved with a puncture resistant, flexible, non-metallic plate. The aluminum safety toe is lightweight and meets ASTM safety standards. Incredibly tough Armatec™ toe protection offers extra abrasion resistance. The Vibram® Beehive outsole has a durable rubber outer skin and unique tread design for great traction. The TPU-infused nylon upper is extremely light, highly breathable and highly durable. EnerG material delivers a recharging burst of energy with every step.