Protective Toe Impact testing determines the amount of protection to the toe under various foot pounds of force. Compression testing determines the amount of static pressure a steel/composite toe cap can withstand. Our boots are I75/C75 Flash- and water-resistant leather ASTM F2413 protective toe classification ASTM F2413 electrical hazard standard Lycra Tongue Triple-stitched Proprietary high-walled Vibram® soles are stitched to the upper Fiberglass shank Unisex styles come in men's sizes Advanced S2V Sieve™ technology circulates air in and water out 8 Inches in height Uniform Compliant (AR 670-1) Reduce injuries with Roll-Stop Ankle Stability™; Made in the USA, Berry Compliant Coated for flame resistance