You will thoroughly love your Thorogood Hiking Boots. The waterproof, tumbled full-grain leather uppers look as good as they wear. These Thorogood boots have been engineered for stability on the trail or at work. The soft linings are heavy duty nylex, giving you comfort and durability. The Thorogood's waterproof system keeps your feet as dry as toast. The removable VGS motion sensor dual-density polyurethane footbeds have memory foam for lots of cushioning. The midsoles are compression-molded EVA with impact 300 gel heel inserts. These memory foam inserts give you lots of extra cushioning when you wear these composite toe boots. The engineered composite shanks keep your feet stable by supporting your ankles, not letting them bend in or out too much. The cement construction ensures flexibility and waterproofing. The durable shanks keep your feet aligned and reduce fatigue throughout the day. These hiking boots meet ASTM F 2413-05 M/I/75/C/75 standards. They've also been tested for electrical hazard and electric shock-resistance, meeting CAN/CSA-Z195 18000 volts electrical shock-resistance standards. These hiking boots are also 100% non-metallic.