Ryders Strider R800 004 Black Grey with Adaptor is a sporty style designed for prescription sun lenses. This semi-rimless style comes with anti-slip grips on the temple tips and nose pads. The semi-rimless design allows for unobstructed views and aids in venting moisture. These Ryder sunglasses are sold with an Rx Adaptor inserted into the frame. The adaptor enables the option to add a prescription lens.