Our Waikiki ladies sunglasses feature a bold fashion TR90 frame with TAC polarized lenses and spring hinges for added comfort and better fit. Your order arrives packaged in a microfiber pouch which doubles as a cleaning cloth. TR90 is a super-polymer compound that is extremely lightweight, incredibly sturdy, but very flexible. TAC is the acronym for Tri Acetate Cellulose used in lens construction. These lenses are comprised of a scratch resistant plastic and block 99% of all UV rays up to 400 nanometers. Frame Color:  Shiny Crystal Olive w/Clear Lens Color:  Amber