Just 6.8 grams! Beta Titanium 153 is 0.6 mm thick, and combines the lightness and strength of Titanium with the utmost flexibility. With outstanding memory, when flexed it will return to its original shape, time after time. Its 2.1 mm thick TR90 Ultra elastic polyamide ring insert adds a pop of color and allows for an easy V-groove lens application. Modo Paper Thin Titanium is certified as intellectual property by OHIM (Office for Harmonization in the International Market).