Rubber frameTri Acetate Cellulose lensPolarizedUV Protection Coating coatingLens width: 54 millimetersLens height: 32 millimetersArm: 110 millimetersSAFE & CUTE -- UBIUO use healthy and environmentally friendly silicone material, wear resistance, can effectively prevent the child's eyes and face from being injured. Great goggle design, can hardly feel them on face UBIUO POLARIZED LENSES add special coatings to the lenses, that filter the glare of the sun in the same direction on the surface, like water, snow, road pavement....Polarized lenses provide premium protection against the harmful rays, give us a visually restores true color, eliminates reflected or scattered light. Great glasses protect children's eyes.Ophthalmologists recommend that minor children should not wear mirror sunglasses. Grey lenses can protect the eyes while controlling enough sunlight to pass through the lenses, which can ensure that children grow up to receive full color and appropriate sunlight. This is good for the healthy growth of children's eyes.SIZE DESIGN & PACKAGE -- The frame is curved to fit children's head, and child wears it without squeezing the head for a more perfect and comprehensive protection. Unique style design with practical eyewear rope to prevent glasses loss when playing game.UBIUO is aim to bring you high quality fashion experience in sunshine and nature.