Care Instructions: Blow some air on lens before cleaning to avoid scratches and use only cleaning cloth provided by Sunglasses. Please use mild surfactant cleaners or gentle soap water to clean the sunglasses and gently wipe dry with a clean soft cloth. Don't keep any sunglasses in the car during the summer, as the heat will damage the lenses. DO NOT DRY CLEAN/RUB LENSES AS IT CAUSES SCRATCHES DUE TO DRY DUST ON THE LENS SURFACE ALWAYS WET CLEAN THE LENSES TO PROTECT FROM SCRATCHES. Fit Type: Regular ULTRA-LIGHT AND THIN FRAMES These DUKE sunglasses are made of ultra-Light weight TR-90 materials, so the frames are super light but very strong. These weights are only 20-30 grams, so you will feel very comfortable and no pressure on your nose. UV400 PROTECTION FOR YOUR EYES Unbreakable Shatterproof Lenses that block 100% of harmful both UVA and UVB radiation from Sun, eliminate reflected and scattered light to protect eyes perfectly. OUTDOOR ACTIVITIES ENTHUSIASTS These sunglasses are Anti-Glare which is the perfect choice for outdoor sports and activities such as cycling, driving, shopping, travelling, hiking, and is suitable as high fashion accessory and daily wear all year round. GENUINE HARD CASE WARRANTY 6 months warranty against all manufacturing defects by SunVoir direct to customer warranty service on all products. FRIENDLY TIPS Any question or problem, do feel free to contact us, we will reply you within 24 hours. We are confident that our product will meet or exceed your expectations. Customer satisfaction is our priority.