You are never too young to get mud on your muck boots. The Kids' Chore Classic boot is built to be comfortable, lightweight, and 100% waterproof, for the muckiest adventures. The pull-ons feature a quick clean rubber overlay, are triple reinforced in the toe area and quadruple reinforced in the heel area, which is wide cut for even more stability. The 5mm Cr flex-foam booties feature four-way stretch nylon that is lightweight and flexible. Stretch-fit topline bindings snug the legs securely to keep warmth in and cold out, making these boots useful in any weather.