Vintage&ndash; Best First Sunglasses for Baby, Toddler, and Kids! 100% UV Protection. Many Colors and Sizes! Let your child be the coolest kid around, rocking our classic, retro style sunglasses! Our sunglasses provide 100% protection from sun&#039;s damaging UV A and B rays. We listed many different sizes and styles of this ageless Vintage design sunglasses in one convenient listing! We tried to take the guess work out of purchasing the correct size sunglasses for your growing children. We listed clearly in each listing our detailed recommendations for proper size and age recommendations. BIB-ON products have your child covered! Baby 110mm (0 + 1Yr) : Flexible frame Toddler 115mm (1 + 2 Yrs) : Flexible frame Toddler 120mm (2 + 3 Yrs): Flexible frame Kids 125mm (4-10 Yrs) : Non-flexible resin or Flexible Silicone frame Make a FITMENT TOOL by cutting out a cardboard box as shown above. Frame width = Arm length 110mm = 4 +1/4 inches 115mm = 4 + 1/2 inches 120mm = 4 + 3/4 inches 125mm = 5 inches