- Material: 100% natural rubber • Free from chemicals like phthalate, PAH • Waterproof • High shaft • Tested for slip resistance on wet and dry surface making sure your child keeps a good grip • Tested for flexing of the sole to guarantee, the soles do not splitSIZE & FIT • Please check the size guide to make sure, you pick the right size OUR RECOMMENDATION • For colder days, add an extra wool sole • Store the rain boots away from direct sunlight