Callaway Golf Men's Tour Authentic FT- IH Sunglasses (Dark Silver/Graph Frame,Dark Silver/Graph Lens) Lens: Neox Solf x Adjusts to all light conditions Precise visual acuity for distance and depth perception Enhanced overall visual performance Frame: Tech/Performance style TR90 Grilamid construction Lightweight yet highly durable material Semi-rimless design equals zero distraction Fit: Med -Large head shape Megol rubber nose and ear tips provide secure non-slip retention. Superior frame memory for consistent fit over time