Our classic children's rubber boots feature a reflective stripe around the sole. The main material of the boots is made from 40% natural rubber, and the outsole is made from vulcanized, PVC-free rubber. Thanks to their cotton lining, these rain boots are particularly comfortable to wear. What is the right shoe size for my child? We make it easy for you. Most Reima shoes have the Happy Fit measuring system: a removable insole with a print that helps in selecting the right size and fit. If the foot is on or below the happy smiley, the shoe fits. If the foot goes beyond the line, it's time for the next size.