Black/Gray (S45BGS) - Matte Black thermoplastic front frame and glossy black back thermoplastic back frame. The temples are made with a glossy black stainless steel and a black temple tip accent.
Tortoise/Gold (S45TBG) - Matte tortoise brown thermoplastic front frame and glossy tortoise gray back thermoplastic frame. The temples are made with a shiny gold stainless steel temples and a black temple tip accent.