Blending high end style with functional alpine gear. The Ferrata features the award winning sun shield system you know and love with the extra sun protection of a removable center piece. Both include perforations to allow cooling and air flow. Polarized Helio Lenses Removable Magnetic Center Piece and Sun Shields Premium Ultralight Frames Hard Case Included All-Day Comfortable Fit Lifetime Warranty The Ferrata Is a large Square frame, minted towards guys and gals with larger heads, or those who just love a large pair of shades. Combined with lightweight metal frames, spend long, bright days in the backcountry without sacrificing your comfort. Weight: 36.9 gramsWrap & Angle: High Temple Width: 147 mmBridge Width: 20.2 mmLens Width: 53.6 mm With our Helio polycarbonate lenses, all Ferratas are polarized, block 100% UVA/UVB/UV400 wavelengths and pass the FDA basic impact test.