Built for adventure with its large frame and wide arm profile, the Backbone is your first line of defense against any condition. Frame: 8 base mold injected Grilamid frame with a 5 barrel hinge and unique mold injected logo. Optics: 8 base Melanin infused Polycarbonate lenses. 100% UV protection. Up to 98% Blue Light protection. Measurement: 50h x 140w x 120l. Weight: 40grams. Material: Plastic, Polycarbonate.