30 DAYS MONEY BACK GUARANTEE - 100% Satisfaction Guaranteed. Please just let us know if you're not happy with your purchase within 30 days, and we'll take care of you. You have no risk to try. SUPER CUTE FRAME - With bright colors your kids can show off their unique sense of style. Delicate glasses frames can also highlight their cuteness. SUPERIOR CLEAR VISION - No harsh yellow/orange colored lenses to distort your child's vision. Blue light blocking lenses can also help reduce glare, improve contrast, provide better color perception, and relieve digital eye strain. BLUE LIGHT BLOCKING PROTECTION - Block over 99% of the most harmful blue light rays (under wavelength 420 nm) and 99.9% UVA/B/C rays to protect your child's eyes. UNBREAKABLE FRAMES - Our bendable, soft, durable frames are comfortable and ultra light for little ones. Lens width: 45 millimeters. non-polarized. plastic lens. Plastic frame.