These fit-on sunglasses developed from original NASA optic technology for ultraviolet ray and blue-light protection for astronauts. A convenient alternative to clip-ons, these patented, polarized sunglasses slip comfortably over most prescription eyewear frames and look like regular sunglasses. The lightweight, sturdy, hypoallergenic polycarbonate frame has side lenses for unobstructed peripheral vision. Unlike typical sunglasses that only block 70% of UV rays, these are 100% UV-protective (ophthalmologists recommend at least 95% UV protection). The triacetate-polarized, scratch-resistant lenses are oversized to protect the entire eye area and can be worn as regular sunglasses. Includes drawstring carry pouch and cleaning kit. Tortoise frame. (1 oz.)