Justin Boots Stampede Stabilization Comfort System® is a revolutionary comfort package combines the J-Flex Flexible comfort System®, Justin Stabilization Technology™ and an EVA comfort foot bed. Justin J-Flex Flexible Comfort System® patented foot pampering technology makes Justin Boots the most comfortable Western boots you will ever own. Justin ASTM Electrical Hazard rated boots provide protection from open electrical currents up to 18,000 volts. Justin's Non-Metallic™ styles feature nylon or fiberglass shanks. Safety toes are lightweight metal free composite that do not conduct heat or cold. Uppers are designed to reduce marking or scratching of work surfaces. These boots will not activate screening devices in high security work environments.