Features of BIBAL safety shoes insoles For safty shoe insole 1. Special material : Soft urethane gel has excellent shock-absorption properties and reduces the fatigue of thesoles 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 march 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.