The tifosi mira half frame sunglasses the light weight mira is the curvier sister of our single lens favorite made of grilamid tr 90 a homopolyamide nylon characterized by an extremely high alternative bending strength low density and high resistance to chemical and uv damage tifosi mira half frame sunglasses features hydrophilic rubber ear and nose pieces for a no slip fit adjustable ear and nose pieces for a customizable comfortable fit vented lenses improve air circ