It is often very difficult to get sunglasses on very small children, so Julbo invented the looping reversible frame! There is no right or wrong way up and these glasses will adapt to small faces between 0-2 years. Designed without hinges and a removable strap, they are completely safe and the short, flexible sides ensure maximum comfort for babies. Alti Spectron x6 polycarbonate Category 4 lenses.