Drawing inspiration from aviation design and natural hues, the Estero features a distinctive double brow line that distinguishes it from other sunglasses. Enhance your outdoor look with this expertly crafted style. Premium Aura Lenses Ultralight Frames All-Day Comfortable Fit Lifetime Warranty The Estero is a large square aviator shaped frame made to elevate your everyday adventure style. Wrap & Angle: MediumTemple Width: 145mm Lens Width: 53mm 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 lensesSlate: Non-Mirrored, Grey tint, 10% VLT, Base 4 curve CR39 lenses Clear ViewsSee the world clearly with enhanced optics. The Aura lens is made for superior clarity, abrasion resistance and strength. Polarized with 100% UVA/UVB protection. Ultralight FramesSustainable and flexible meets stainless steel durability with our Premium Ultralight Frames built for enrichment in the sunshine.