The Men's Nano Toe Work Chukka Driving Moc features Twisted X's CellStretch® technology cells in the forefoot and heel to provide superior cushioning and comfort that'll keep you going strong all day.  Eco friendly construction includes Blend85 footbeds made with 85% recycled foam. The footbeds also feature ecoTWEED lining made from recycled plastic bottles.  Nylon laces, mesh lining, a nylon/fiberglass shank, and an EH-rated oil and slip resistant rubber outsole make this shoe ideal for a day on the job.  Nano composite toe is rated  ASTM F2413-18 M/I/C EH.