Strike King Plus Polarized Sunglasses The SKP23 features a black frame with amber lens Since 1984 Strike King has been a leader in polarized sunglasses for fishermen New models include lenses made with APT (Advanced Polarization Technology) The benefits over traditional CAB plastic lenses are: greater visual acuity (imporved contract and shapness), a more rigid lens and smooth state of the art coating creates greater resistance to scratches and hence better optical performance Polarization in fishermen's sunglasses is a must and a benefit for most all other uses and all Strike King models are polarized