This frame size is Medium with a hinge to hinge measurement of 130 mm. Ideal for average faces. LENS MATERIAL: Costa's most high tech lens - 580 Glass provides superior clarity, ultra scratch-resistant, 100% UV protection and the best polarizing efficiency available. LENS COLOR: Grey Polarized is a great everyday choice for activities on water and land. 100% UV PROTECTION: Lenses are coated with 100% UV protection to protect your eyes from harmful UV rays. FRAME FEATURES: Lido feature a square, matte brown smoke frame and grey 580g lenses. PROTECTIVE CASE AND CLEANING CLOTH: Costa case and cleaning cloth included to keep your Costa's safe while you are getting after it.