Serengeti Rick Sunglasses pair a lightweight, rimless frame with PhD 2.0 photochromic polarized lenses for clear, adaptive vision in changing light. Designed for a medium fit, they offer a low-profile silhouette with secure rubber-grip contact points. Key attributes: Matte black | Nylon | Photochromic lenses (PhD 2.0) | Polarized lenses | Spectral control | Impact-resistant lenses | Rubber-gripped nose pads and temple tips | Lightweight construction | Prescription compatible (RX available) | Rimless design | Matte black finish | Reduced lens size for a compact profile | Featherweight temple tips | Dimensions & fit: 64 x 15 x 130 mm (lens x bridge x temple) | Medium fit | Composition & care: Nylon frame | PhD 2.0 photochromic polarized lenses | Clean lenses with the included microfiber cloth and store in the provided case. Avoid abrasive cleaners and high temperatures.