TAC POLARIZED LENS - UV400 protection lens can blocks 100% harmful UVA & UVB Rays to protect your eyes; Tri-Acetate Lens is high-grade plastics lens,they are polarized to eliminate glare, reduce eye fatigue, impact and scratch-resistant for durability. STURDY BAYONETS - Made with metal frame with bayonet temples. We add bump metal blocker on the legs, so the bayonets stay secured and will not keep falling off of the temple. HOT CLASSICAL - The classic aviator 55mm Sunglasses are great suitable for fishing, dirving, military and air force etc. outdoor activities. Classical and stylish design, with rich color combinations of frames and lens. SKIN-FRIENDLY NOSE PADS - Environmental & skin-friendly soft and comfortable long-time wearing without fatigue. 90 DAY MONEY BACK GUARANTEE - We provides LIFETIME AFTER SALE SERVICE for all products, in case any broken problem happens, pls feel free to contact our customer service. We will be happy to solve the problem until satisfaction. You have no risk to try and we will provide you the best service!