These boots are tougher than nails, built with a SWEN-FLEX insole board which is puncture resistant and metal-free for maximum protection without the weight of traditional metal plates. The premium full grain leather upper features a six-row stitch pattern. Ariat’s ATS® Technology provides superior comfort, stability and support. Built on the Extreme Durability platform with Goodyear® welt construction , providing maximum durability for the harshest conditions. This is the best choice for high heat and high abrasion occupations like welding and railroad. Other features include mesh lining and a 90 degree heel. Puncture resistant (PR) ASTM F2413-11 rated and the steel toe is ASTM F2413-11 M/I/75 C/75 EH rated.