Description: Frame Material: Silicone; Lens Material: Resin Visible light perspective rate 50 (%) ,Anti-UV rating: UV400, can protect the baby's eyes, effectively resist UV damage Polarized glasses protect children's eyes from bright light Dimensions: mirror width: 51mm; frame height 34mm; frame length 107mm; nose bridge spacing: 16mm Glasses for most children aged 3-12, but depending on the size of the child. For more accuracy, please refer to the frame size.