6-Base Polycarbonate – Spy's spherical sunglasses are available in 4, 6, 7, and 8-Base."Base Curve" refers to the amount of "wrap" that a lens has, which in turn affects the curvature of the frame. A 4-Base style will have a flat, boxy appearance, while an 8-Base style will provide a sleek, wraparound fit.

Arc® Lenses – Featuring an accurate radius curvature that's based on space age technology, Arc® lenses are injected in a unique tapered shape to provide optically correct, distortion-free viewing at all angles.

Happy Lens™ (Black and Matte Black Colorways Only) – Spy Happy Lens™ technology lets in the good long-wave blue light that promotes balance in the body's circadian rhythm, blocks the harmful bad rays, and combines crisp, color contrast-enhancing lenses and Trident™ Polarization for the ultimate viewing experience.

54-20-137

Built from bomb-proof Grilamid®

UV Protection – These sunglasses block 98%+ of the Sun's UV rays.

This product may contain chemicals known to the State of California to cause cancer, or birth defects, or other reproductive harm.