Fusing bold lines with crystal-clear optics, the Spy Cyrus Sunglasses are ripe for cruising around the local lake under the blistering sun, partying at summer festivals, and catching rays in the backyard. These premium shades feature Happy Lens technology, which blocks 100% of harmful UV rays. Where this technology excels lies in its ability to pass through mood-boosting blue visible light on the higher end of the spectrum. Ultimately, this long-wave blue light creates a feeling of well-being, something we can all get behind. Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.