With high speed redtrade fototectrade lenses the tifosi dolomite 20 sunglasses are great for running cycling and anything else the tifosi dolomite 20 sunglasses were designed for comfort and durability they are 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 the hydrophilic rubber ear and nose pieces mean a no slip fit and adjustable temples and nose pieces al