The Gyron Lacaille Speed is a comfortable, "wrap -around " sports glasses and has a lightweight and very comfortable ( Grillamid TR90 ) frame. Personal adjustment is possible thanks to the adjustable nose bridge . The decentered , high- contrast lenses with a special coating to give a sharp image . Ideal for running , skating , cycling and other outdoor sports . Comes with Yellow lens and and 2 extra lens of Grey and clear. Ideal for all light conditions.