Sports wraparound sunglasses are constructed of polycarbonate safety rated ANSI Z87.1 lenses and unbreakable, lightweight and flexible TR 90 frames. Perfect wrap around frames block out wind, dust and debris from all direction. Yellow sunglasses also known as night vision sunglasses will eliminate glare around lights and brighten vision at night. Clear sunglasses and yellow glasses are also UV 100% protection, so you can wear for days, raining days and cloudy days. Fits Medium to most extra large head sizes.