Muffler Sunglasses The KLIM Muffler Sunglasses inspire an iconic frameless lens style – offering a clean and broad FOV, fatigue-reducing lens technology and a comfortable, adjustable fit for all-day wear. A lightweight, durable and flexible frame combines with ergonomically optimized rubber grip pads to keep the Mufflers locked in all day long. FRAME TR90 thermoplastic lightweight semi-flexible frame material Textured rubber nose and temple arm pads for grip Removable interchangeable molded rubber nose bridge for fit adjustment Low profile flexible temple arms Compatible with RX clip (sold separately) for prescription eyewear Metal injection molded (MIM) 316L grade stainless steel hinge mechanism LENS Lens color optimized for dynamic visual acuity reduces fatigue Polycarbonate hard coated anti-scratch frameless lens Super HD lens clarity is optically correct, reduces eye fatigue Polarizing optimized for glare reduction and device visibility Anti-glare coated lens interior reduces light reflections inside the lens Hydrophobic + oleophobic coatings repel water and oil UV400 protection 12-15% Visible Light Transmission (VLT) Exceeds ANSI Z87.1 certification INCLUDED Protective case Alternate size spare rubber nose bridge Microfiber drawstring bag – doubles as a cleaning cloth