These 5mm neoprene boots are 100% waterproof and designed for ultimate comfort with a mesh lining. They feature an easy on/off design and a roll-down calf pipe for tucking in pants or venting in warm temperatures. The Muddy proprietary outsole ensures great traction in all weather conditions, providing flexibility, warmth, and excellent heat retention. Made from natural vulcanized rubber, the boots are ozone-resistant and anti-aging. The EVA midsole with dual-density construction makes them lightweight and comfortable like a sneaker, while the 4x4 grip and slip-resistant sole add stability. The PU comfort footbed offers lightweight cushioning and shock absorption, and a 4-inch TPU shank adds stiffness. They are comfort-rated from 0 to 70 degrees.