STURDY BAYONETS - 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. TAC POLARIZED LENS - UV400 protection lens can blocks 100% harmful UVA & UVB Rays to protect your eyes; TAC lens is high-grade plastics lens,they are polarized to eliminate glare, reduce eye fatigue and scratch-resistant for durability. HOT CLASSICAL - The classic aviator sunglasses are great suitable for fishing, dirving 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 wearing. 90 DAY MONEY BACK GUARANTEE - 100% satisfaction guaranteed. That is our promise. So, if you\'re not completely happy with your purchase within the first 90 days, just let us know. We will do whatever it takes to make it right.Any questions you have, pls feel free to contact our customer service.