Visioptica sunglasses for children. They are designed to protect the eyes from high solar luminosity. UV400 protection. Visioptica children's sunglasses have 2mm thick lenses, which gives them maximum resistance to breakage. This range of sunglasses preserves children's eyesight, complying with ophthalmologists' recommendations. Its UV 400 filter offers close to 100% protection and its frame close to the face provides excellent side protection. This product complies with the European directive 89/686/CEE according to the EN ISO 12312-1-2013 standard. Reverso Twist glasses have mirrored polycarbonate lenses with up to 100% UV efficiency. Thanks to their composition of TR 90 and silicone, they are highly resistant to impact. Their shape is reversible and they have a removable elastic strap.