IZIPIZI Kids Plus Sunglasses, #C Sweet Blue (Age 3-5y)TINYAPPLE IZIPIZI FW24 Sunglasses, #D Milk (Age 3 5y) The lens of a Kid's eye is permeable to UVA and doesnt become impermeable until adulthood. Therefore its necessary to protect Kids retinas with sun filters. Flex hinges Flexible and comfortable arms, with spring hinges, which adapt to all face shapes and sizes. Bio sourced material The glasses frame is made of 45% organic polyamide sourced from castor oil. This model complies with the international