Serengeti Lupton 2.0 Sunglasses combine a rimless, ultra-lightweight frame with advanced PhD 2.0 photochromic lenses for clear, comfortable vision during driving and active use. Key attributes: Black | Nylon (Grilamid BTR XE 4010) | Photochromic (PhD 2.0) lenses | Polarized lenses | Spectral Control (reduces blue light) | 100% UV protection | Hydro- and oleophobic front coating | Anti-fog backside treatment | Impact-resistant Trivex lenses | Grip-embedded temple tips | Rubber nose pads | Lightweight and flexible frame | RX prescription compatible | Fully rimless frame | Substantial temple design | Minimalistic aesthetic | Medium-large lens shape | Dimensions & fit: Lens width 64 mm | Bridge 18 mm | Temple 130 mm | Base curve 8 | Medium-large fit | Composition & care: Frame: Nylon (Grilamid BTR XE 4010) | Lens: Trivex (PhD 2.0)