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 Georgia waterproof system Non-metallic Fully lined with breathable moisture-wicking material ASTM F2413 protective toe classification ASTM F2413 electrical hazard standard Injection molded seamless construction TPU outsole with PU midsole 5 Inches in height Ergo-Fit safety toe designed to match contours of feet, providing superior comfort and flexibility Twin gore panels for great fit Comfort Core® Next Gen memory foam insole Full-grain SPR salt-resistant leather 3-pronged TPU Suspension Shank for multidirectional support Secondary fiberglass shank for additional arch support GEORGIA BOOT Men's FlexPoint Ultra 5 Inch Composite Toe Waterproof Chelsea GB00553