Here comes the sun! A classic style with a modern twist. The Little Sunny is designed to fit ages 1-5 years old and offers UV400 protection, blocking nearly 100% of UVA and UVB rays. Polycarbonate frame. UV Protection. Lens width: 38 mm/Lens height: 47 mm. Acetate lenses with a polycarbonate frame make these little sunnies lightweight and scratch/impact resistant.