Made possible through an exclusive KUIU x Simms x Toray collaboration, our pro-grade chest waders redefine waterfowl hunting performance. Featuring durable 4-layer waterproof stretch materials, hunt-driven features, and neoprene-insulated boots with our patented mud-release tread system, every detail is designed for the hardcore waterfowl hunter. Choose from our camouflage pattern or a classic solid color, available in two configurations: the proven HD Flex, or the fully equipped PRO HD Flex Zip with a front zipper and reinforced knee protection. Built to excel in extreme conditions—whether in wetlands, river bends, or flooded timber—our waders deliver exceptional warmth, durability, and comfort wherever water is involved.