Ray-Ban RB3460 Aviator Flip Out Interchangeable Sunglasses are inspired by classic Aviator sunglasses & the innovative materials of the Tech collection. The Aviator Flip Out comes with three interchangeable lenses, a frame case, & a special lens case to store the lenses you will wear tomorrow. Each kit has a a rich primary color lens, a fashionable gradient color lens, & a polarized lens to give you three Ray-Ban Aviators in one cool pair of sunglasses. made from gold memory metal & APX plastic lenses with 100% UV protection; each frame is entirely nickel-free, resistant to corrosion, & hypoallergenic. APX lens material allows for an ultra lightweight lens with maximum performance capability. Enjoy the lightweight, flexible frames of the Aviator Flip Out sunglasses which means that you can switch out a lens & click in a new one as you please.