These all natural rubber rainboots are durable and tear-resistant, yet flexible and comfortable. Your child will love the look and feel; you'll love the quality and safety. These all natural rubber rainbows are made of thick and soft rubber that makes them flexible and comfortable, yet rugged to last a long time. Flexibility is important to allow kids to bend down and run without any restrictions. • Rainboots are made to get wet so these rainbows have a 100% cotton liner that quickly wicks away moisture so the boots dry quickly and the feet stay warm and dry.