Ariat Men's Groundbreaker Moccasin Toe H2O Work Boot 100% Leather and Textile Imported Synthetic sole Shaft measures approximately 11" from arch Boot opening measures approximately 16" around Waterproof Pro construction with waterproof full grain leather foot ATS Advanced Torque Stability technology with composite forked shank Moc Toe Profile Mesh Lining Heavy duty oil and slip resisting Duratread outsole Waterproof Pro Soft toe is ASTM 2892-11 EH rated