CORE FEATURES Lines inspired by aviation, colors inspired by nature and a double brow line sets the Estero apart from the rest. Elevate your adventure style. Premium Lenses Metal Frames All-Day Comfortable Fit Lifetime Warranty DESIGN & FIT The Estero is a large square aviator shaped frame made to elevate your everyday adventure style. Wrap & Angle: MediumTemple Width: 145mm Lens Width: 53mm LENS SPECS All Estero lenses are polarized, block 100% UVA/UVB/UV400 wavelengths and pass the FDA basic impact test. Amber: Non Mirrored, Amber, 15% VLT, Base 4 Curve CR39 lensesForest: Non mirrored, Green tint, 11% VLT, Base 4 curve CR39 lensesSlate: Non-Mirrored, Grey tint, 10% VLT, Base 4 curve CR39 lenses Lens specs:Slate: Non-Mirrored, Grey tint, 10% VLT, Base 4 curveTerra Fade: Fade, Amber tint, 10% VLT, Base 4 curveAmber: Non-Mirrored, Amber tint, 15% VLT, Base 4 curvee SUNSKI'S PROMISE "We proudly stand behind every pair of sunglasses we make. If your sunglasses break under normal use, we'll fix them or replace them for you."