Overview - The Youranium range is dedicated to custom comfort making it ideal for the most dedicated and professional anglers. A desired fit making it ideal for all day wear. Designed in Australia, manufactured in Japan. Featuring a sturdy yet light-weight frame, extremely scratch resistant glass lens, Slice Polarised Photochromic Glass lenses with anti-reflective coatings ( Tonic ARC ) on the back surface to reduce back surface reflection and TONIC Glass Photochromic Lenses, that darken and lighten depending on ambient light conditions. More than just sunglasses, TONIC are a brand with the backing of years of research & development. TONIC Eyewear are a company born from passion with dedication to producing the finest sunglass optics for Australian conditions, some of the harshest on.