WATERPROOF PVC RAIN BOOT Our Lighted Boots are made with Polyvinyl Chloride, aka PVC. Polyvinyl Chloride is a plastic material that is strong, waterproof, and flexible. The qualities make this boot perfect for standing up to adventurous play! COMFY INSOLE AND LINING Children are rough on boots and need a comfortable insole to run around on. These boots are made with a cozy EVA insole. The insoles are removable, making them easy to replace and clean. These boots are made with a treaded lug outsole to provide traction on slippery surfaces! No more slipping and falling!