Koolsun is a Dutch sunglasses brand for kids. All sunglasses have lightweight flexible frames that bend.  Get ready for the sunshine with these beautifully designed Koolsun sunglasses. The AIR style is a timeless pair of aviator sunglasses. They look great, and will last years as they are both durable and flexible.  The unbreakable polycarbonate lenses are optical class 1 and cat. 3 and protect your child's eyes from harmful UV-A and UV-B sun rays. You can store it in its KOOL accompanying microfiber imprinted pouch, when not in use. Generously sized so size down if in doubt UV 400 protection cat. 3 impact resistance microfiber bag lightweight strong + flexible mirror lens Product dimensions 0-3 years: lens width: 40 mm | lens height: 34 mm | nose bridge: 14 mm | frame width 100 mm | temple length 100 mm 3-8 years: lens width: 44 mm | lens height: 37 mm | nose bridge: 16 mm | frame width 110 mm | temple length 110 mm