Oliver 4" Leather & Mesh Men's Steel Toe Sneakers, Black, Gray & Blue (OL11111) Leather 4" height; leather upper with air-mesh cut outs for ventilation; external TPU cage to pull the heel back reducing friction and hot spots; rubber toe-guard; color-coordinated pull loops on the heel and tongue Removable dual-density poured PU and open cell foam footbed Slip-resistant shoes with center lug tread design and ergonomic flex-grooves at heel and under the mid-foot; large, angled lug channels along the perimeter to enhance stability Meets ASTM F2413-11 M 1/75 C/75 EH; Electrical hazard rated outsole, steel toe impact protection Recommended use: construction, manufacturing, general purpose