Lightweight, Durable Frame – Designed for comfort and fit, these sunglasses are made from the same super lightweight Grilamid material commonly used by the military and in medical applications. These frames are super lightweight, extremely flexible, and heat and UV resistant. Grilamid frames are well known for their strength, lightweight comfort, shape integrity, and impact resistance. Designed for medium to large heads. Polarized Ultra-Light Lenses – Our polarized 1.0mm TAC (Triacetate) lenses are manufactured with high quality Japanese and German raw materials. The precision 7 layer construction produces lenses with excellent optical quality and results in a lens that is ultra-lightweight, tough, and scratch resistant. The Polarization layer reduces glare caused by reflected light which helps to improve visual comfort, clarity, and reduces eye strain. PURIVEX LENS COATING - KastKing PuriVex lens coating repels water, oil, salt, and dirt while resisting scratches. This protective layer keeps lenses cleaner, clearer, and more durable, even in tough marine and outdoor environments. 100% UV Protection and Base Lens Colors – Smoke lenses are ideal for bright sunlight with the most realistic color reproduction and work well in medium light and partial shade. Brown lenses increase contrast and depth perception, ideal for partly cloudy to sunny conditions. Copper lenses are best suited for moderate to low light. KastKing sunglasses block 100% of the harmful UVA and UVB rays and meet or exceed all U.S. ANSI standards. Storage and Cleaning – Includes a molded custom hard case and a custom Prym1 Camo microfiber pouch that can be used for cleaning as well as storing your sunglasses. Enjoy the outdoors in style and comfort with KastKing Kateel sunglasses.This stylish sports wrap design offers maximum coverage minimizing light intrusion to reduce eye strain and improve vision. This style is perfect for sports activities such as biking, running, boating, fishing, and golfing, yet they also function well for everyday casual use.The Kateel features a lightweight Grilamid frame and soft touch nose and temple pads for extended comfort during long periods of use. These frames are built to survive years of active use, they are ultra-lightweight, extremely flexible, resistant to heat, resistant to UV rays, and possess excellent memory.Our polarized TAC (Tri Acetate Cellulose) lenses are manufactured with high quality Japanese and German raw materials. The precision 7 layer construction produces lens with excellent optical quality and result in a lens that is ultra-lightweight, tough, and scratch resistant. Our lenses pass a double decentering test to ensure they meet our high standard of visual clarity with no optical distortion which can cause eye strain and headaches. Polarization helps reduce glare caused by reflected light which helps improve vision and reduce eye strain and our lenses block 100% of the harmful UVA and UVB rays.You can choose between smoke, brown, or copper base lens colors. Smoke lenses are ideal for bright sunlight and produce the most realistic color reproduction, but also work well in medium light and partial shade. Brown lenses increase contrast and depth perception, ideal for partly cloudy to sunny conditions. Copper lenses provide excellent contrast and depth perception, best suited for moderate to low light.Select from a variety of stylish mirror lens finishes and frame colors to suite your taste. Your sunglasses will also include a molded hard case and a microfiber pouch which can be used for cleaning as well as storage.