Our Key West glasses are unisex, featuring TR90 frames and PC polarized lenses. Your order arrives packaged in a microfiber pouch which doubles as a cleaning cloth. TR90 is a super-polymer compound that is extremely lightweight, incredibly sturdy, but very flexible. PC (polycarbonate) lenses are about 10 times more impact resistant than normal plastic or glass lenses. They are lightweight and provide ultra violet (UV) protection. Frame color:  Matte woodgrain outside frame - shiny dark brown inside frame Lens Color:  Amber Amber lenses brighten vision on cloudy days and in low light situations by blocking blue light and reducing glare. Amber lenses also increase contrast and visual acuity, which is most effective against green and blue backgrounds. They are a good choice for fishing in brackish waters, golfing, cycling, driving, and water sports.