Why Quad Comfort? Well, why in the heck not? It's not like work boots with four layers of insole cushion comes along everyday. Protecting against the kind of jarring shock only a full day on the clock can force feet and legs to absorb, the unique Quad Core insole boards shoulder the load at individual weight-bearing points. Basically, so a worker's feet and knees don't have to, because they've got far more important things to concern themselves with when the workday's all said and done. Like, for instance, whupping some hind end in a fastpitch league later that night. Long-wearing Quad Comfort TPU oil/slip resistant outsole. Full-grain, oiled leather upper with side pull tabs. Dual-density, polyurethane midsole. Quad-Core with EVA filled cutout zones in heel and forefoot. Soft, removable, dual-density footbed. Steel Shank. Weight 3.3 lbs per pair.