Features of BIBAL children functional insoles 1. Special material : Soft urethane gel has excellent shock-absorption properties and reduces the fatigue, of the soles and the top of the feet that receive the most weight., The hipol materials absorb perspiration from the bottom of the feet and allow you to work comfortably. 2. Arch support insert : Hard, projecting arch support insert reduces foot fatigue (Anti fatigue insoles) and, protects the back and the knee joint during training. 3. Mesh material that provides excellent ventilation gives additional functions., Product design has been shaped to a child foot structure to ensure a comfortable fit and helps with, their growth.