TYR Technoflex 4.0 Junior Performance Metallized Goggle This Technoflex 4.0 Junior Metallized is about 8% smaller than the Adult. Our new technology allows different hardness's of TPR to be placed in specific locations. Softer TPR around the face and firmer TPR along the nosebridge and around the lens. Optically clear, shatter resistant Lexan polycarbonate lenses are UV protected and anti-fog coated. Metallized coating reduces glare, perfect for outside pools. Oversized lenses provide greater peripheral vision. Ratchet side clips allow for easy tightening of headstrap.