Young eyes are very susceptible to damage from UV rays so they need to be protected from excessive exposure. Tuga's Zolioz sunglasses are FDA approved for blocking harmful UV rays. Tuga Zolioz sunglasses are a great solution that offer protection against harmful UV rays. Perfect when in bright sun and highly reflective environments such as the beach or in the snow. Soft adjustable neoprene strap keeps the sunglasses in place and makes them easy, comfortable and fun to wear. Case is super lightweight and easy for little kids to take on the go and won't break! Case includes sunglasses and two (2) straps. The small strap is perfect for babies and up to 2 years: head circumference from 17-19.5 inches. The larger band is recommended for 2-5 years and fits head circumference from 19.5-21 inches. Great gift for babies and toddlers!