Date First Available:August 12, 2017 ASIN:B097SBDFNY Imported Acetate frame Tri Acetate Cellulose lens Polarized FL-41 tint with 100% UVA/UVB blocking (UV400) coating Lens width: 46 millimeters Lens height: 37 millimeters Bridge: 20 millimeters Arm: 148 millimeters Designed for light sensitivity protection: TheraSpecs target blue light near 480nm, the most harmful wavelength for light-sensitive conditions like migraine, concussion, dry eyes, and vestibular disorders. Our advanced blue light filtering means your eyes and brain can feel protected even when exposed to triggering light. More sunlight protection: TheraSpecs sunglasses eliminate 92% of blue light at 480nm, more than typical sunglasses. They also filter more across a wide range of harmful blue light so you stay protected against natural sunlight and outdoor glare. Feel the difference: Tens of thousands of people have chosen TheraSpecs, and they have a 96% satisfaction rate for light sensitivity protection and symptom relief after 3 weeks of use. Thousands of headache specialists, neurologists, and physical and occupational therapists recommend TheraSpecs for their patients. Outdoor lenses: Outdoor TheraSpecs use dark FL-41 lenses, are polarized to reduce glare, and block 100% UVA/UVB light. Wear them outdoors in bright sunlight. Highly protective, lightweight frame: Keaton TheraSpecs are made of lightweight acetate and feature a glossy black finish. The fun and stylish frame also has a rounded design, saddle bridge and superior spring hinges.