Ariat Men's Workhog Wide Square Composite Toe Work Boot 100% Leather Imported Synthetic sole Shaft measures approximately 10.75" from arch Boot opening measures approximately 13" around Premium full grain leather upper ATS Advanced Torque Stability technology with composite forked shank Wide Square Toe Profile Mesh Lining U-Turn. Oil- and slip-resisting Duratread outsole Composite toe is ASTM F2413-11 Ml/75 C/75 EH