FLEYE solely  uses nickel-free  quality materials, beta-titanium and acetate, so despite several years of use no allergy can be observed on areas where the frame touches the skin.  

Beta-titanium from Japan is characterised by its lightness, flexibility and strength. This nickel-free material is dyed using a special technique resulting in a hard, almost ceramic surface. 

Temples for rimless may also be made from Italian nickel-free acetate which  consists of several layers whereby a unique play of colours and pattern is created. The colours follow the current trends and are inspired by international fashion and fabric fairs.