Ariat Men's Sierra Saddle Steel Toe Work Boot 100% Leather Imported Synthetic sole Shaft measures approximately 10.5" from arch Boot opening measures approximately 15" around Premium full grain leather foot and six-row stitch pattern upper ATS Advanced Torque Stability technology with composite forked shank Roper Toe Profile Moisture-Wicking Lining Safety toe is ASTM F2413-11 M/I/75 C/75 EH rated