30 DAYS' UNCONDITIONAL RETURN -100% risk free to try in case of any broken problem happening; just contact the seller without any hesitation to solve the problem until your satisfaction. SUPER COOL FRAMES - With bright colors, your kids can show off their unique sense of style. A fashionable design gives them a cool look that makes them great for young boys or girls. Your child will love the look and style of these glasses!. PREMIUM BEND & FLEX GLASSES: These glasses were designed with kids in mind. TR90 frames make them super comfortable and lightweight to wear for long periods of time. They are impact resistant and can be twisted and bend without breaking.High quality temple foot covers increase friction and prevent slip. REDUCE MYOPIA RIS - Protect kids vision by blocking blue light. Enjoy digital time,your children can enjoy playing games without worry about eye fatigue,blurred vision and headache. PROTECT YOUR KIDS EYES - Alleviates visual fatigue from constantly playing computer,mobile phone,TV and tablet. Gaming and studying under fluorescent lights with UV400 protection and glare reduction. Lens width: 47 millimeters. non-polarized. Composite lens. TR90 frame.