Strike King SK Plus sunglasses are equipped with special TAC (Tri-Acetate Cellulose) polarised lenses for unparalleled performance. The TAC lenses are very stable and perform well in all weather conditions, so you never have to compromise on vision quality even in wet conditions. Matte Black Frame, Grey Lenses and Polarising SK Plus Tri-Acetate Cellulose (TAC) Lenses