LaCrosse Boot's unique four-layer system provides the perfect balance of comfort and support. For the first time, work boots have continuous layers of cushioning from the footbed through to the outsole. Most work boots provide plenty of cushioning above and below the insole board, but LaCrosse Quad Comfort boots have Quad Core, which provides cushioning IN the insole board. Quad Core, the first of its kind, is at the center of Quad Comfort Technology. It's a special advancement in boot construction because zones of the hard insole board are cut out in the heel and forefoot and replaced with cushioned shock pads for maximum pressure relief. And, Quad Core won't compromise support. It maintains the lateral stability and torque you need for firm footing on any work surface. Unparalleled support with every step. No hard board between your feet and the floor. Relentless stability. And, relief from the ground up.