The New DESIGN/D3 – Minimum Weight, Maximum Design. MARKUS T stands for extremely light glasses - 100% handmade in Germany in our very own factory. The new D3 is minimalistic and delicate. The shapes and colors give it a modern appearance. Full Rim, Top Rim and Double Bridge styles have been developed from a 1 mm thin titanium wire and with a new screwless hinge. Stabilised titanium is the base material for the fronts. TMi, the antiallergenic synthetic of the temples developed by MARKUS T, is light, flexible and sturdy. Can it be recycled? Of course, 100%! With less than 4 g, the D3 is one of the lightest and most comfortable glasses ever.