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. The materials’ lightness and flexibility as well as a special designed titanium wire for the nose pads support the frame’s comfort and facilitate adaptation of the frame. 

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.