Methane Motorcycle yellow lens bifocal readers +2.50 are equipped with ANSI Z87.1 safety rated impact resistant polycarbonate lenses. Wraparound half framed frames protect your eyes from the harmful UVs, wind, dust and debris. Rubberized nose pieces and temples provide snug and comfortable fit. Yellow tint, also known as night vision is perfect for night riding, cloudy days and rainy days as well. They are also great for cycling, running, hunting, driving, fishing and golfing. Fits MEDIUM to most of Extra LARGE heads. Fits also lower nose bridge faces. Free Microfiber Cleaning Case is included!