The head superflex junior goggles have a soft tpr construction designed to provide junior swimmers with optimum comfort the hydrodynamic curved polycarbonate lenses are unbreakable and made to perfectly adhere to smaller faces they also have wider peripheral vision their buckle has the rapid adjustment system ras which results in precise and intuitive adjustment of the head strap it is placed on the eyewear to avoid excessive tension and lens deformation the lenses have anti fog proper