Each pair features UV400 lenses that shield eyes and surrounding skin from 100% of harmful UVA/UVB rays. These sunglasses are also BPA-free and undergo rigorous testing to ensure they’re safe for kids to wear, touch, and even chew! With shatter-resistant lenses and flexible, rubber frames, they’re virtually indestructible! Customers like Amy say “I gave them to my niece 2-yo niece for her 2nd birthday. She won’t take them off!”