- Size: 22 • Waterproof boots for kids: made from durable, flexible, and waterproof natural rubber. The handcrafted vulcanization process reduces weak points in the rubber, ensuring your children's health with 100% BPA-free and non-toxic materials. • Guaranteed fun: made of soft and flexible rubber with a non-slip and durable profile, allowing children to run and jump with confidence. Tested to withstand over 100 hours of activity without broken seams or leaks. • Safety function: non-slip sole with deep grooves providing strong traction and draining water, keeping feet firm and dry on smooth surfaces. The sole is self-cleaning, preventing the accumulation of mud and dirt. • Keep feet dry and comfortable all day: leak-proof design made from a single piece of highly elastic natural rubber, keeping your children's feet completely dry after playing on rainy days, streams, puddles, and in the garden. • Soft and comfortable polyester and cotton lining: lined with a blend of polyester and cotton for added comfort, absorbing moisture and allowing feet to breathe from toes to heels.