Julbo Kid's Solan Sunglasses, Spectron 3+ Lens, Pink/Grey, 4-6 Years Spectron 4 Baby lens is a dark lens, blocking 95% of the visible light, for max protection for your child's eyes Rubber temple inserts help keep glasses securely on a child's face Free of finger-pinching hinges, these have flexible temples that let kids pull the sunglasses on and off repeatedly without damaging the frames Lightweight polycarbonate lenses are 20 times more impact resistant than glass and less than one-third the weight Like all Julbo lenses, these lenses are optical category 1, guaranteeing 100% protection against UVA, B and C rays