If you like the classic looks of Smith's Lowdown 2 sunglasses and your face is on the large side, then this XL version is for you. The bio-based frames have soft rubber nose pads, so they don't slide down when you break a sweat. They come with your choice of crystal-clear Carbonic lenses or Smith's color-boosting ChromaPop. ChromaPop lenses enhance contrast and natural color to make the details pop Carbonic lenses offer impact resistance and clear optics 100% UV protection Large coverage 4-base lens curvature is just right for everyday wear Megol nose pads provide nonslip grip so glasses stay put Evolve bio-based frame material is lightweight and durable AutoLock hinges hold frames open for easy one-hand on and off Included Microfilter bag Size and Fit Medium fit