Solar Bat TUFF Children's Polarized Black Sunglasses. These kid's sunglasses lenses are UV protection. UV penetrates your kid's eye all the way to the retina when children play outdoors and exercise. A flexible frame, soft material, good quality, double-layered lens, true version, and true color. The sun's rays emit harsh and harmful rays that cause eye strain and even dizziness, using polarized lenses and sunglasses will reduce eye strain. Another great performance sports sunglasses that are unisex anyone can wear them.