Caterpillar Women's Argon HI Waterproof Comp Toe Work Boot 100% leather Rubber sole Shaft measures approximately 5" from arch Boot opening measures approximately 10" around Waterproof Full Grain Leather or Waterproof Pull Up Leather Nylon Mesh Lining Removable EVA Sock Liner Molded EVA Midsole T901 PVC Putsole Strobel + Cement Construction