Classy and comfortable, the Avenger Work Boots North Haven Swarm are must-have in your footwear collection. Carbon nanofiber toecap meets or exceeds ASTM F2413-18 Impact and Compression EH (Electrical Hazard) standards. Slip-resistant rubber outsole meets or exceeds ASTM F3445-21 standards for better traction. Leather and mesh upper. Mesh lining. Removable high-polyester footbed. EVA midsole. Lace-up closure. Ankle pull-on tab for easy donning and doffing.