Playing tennis and in and outdoors.Like these glasses .. Ońly problem is that I do not believe the foto tech works very wellSuper lightweight, bright shades that don't get in the way of your workout. The polarized lenses also make them excellent when you're out on the water. They cut right through any surface glare from the sun, allowing you to see the fish below.Loved the sunglasses but the style looked like a girls pairThese sunglasses are very light weight and comfortable. They are great for bike riding.I use this brand for cycling and my wife wanted a pair just because. Great glasses that I have used for many years.Excellent rainy or night driving experience...perfect!