4-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 Polycarbonate – Accurate Radius Curvature lenses are tapered to follow the natural curvature of the eye, providing crystal-clear distortion-free vision while reducing eyestrain.

Happy Lens™ – 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.

Grilamid® – This lightweight material is ideal for everyday wear due to its strength and flexibility.

Sturdy 5-Barrel Hinges

100% UV Protection – Blocks 100% UVA, UVB, UVC rays

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