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The J-Max Caliber® by Justin Wrk Boots is a multi-layer comfort system featuring a soft, removable orthotic insert, our patented J-Flex® Flexible Comfort System® for added flexibility, and an energy-returning Poron® foam insole with forepart and heel pads for extra shock absorption. The strategically placed mid-sole cavities, embedded Nylon shank and soft inner PU core add extra cushioning and stability for all-day comfort.
J-Max® Double Comfort®
The J-Max® Double Comfort System® is  packed with new technology , the J-Max® removable orthotic insert with Justin Jel® technology and mesh spacer footbed cover that provides extra comfort and a healthy environment for the foot.