Our Customers are telling us these are the most comfortable glasses they have ever worn. The Super light TR90 frame and lens only weighs .60 ounce. You can hardly feel them on your face, yet they are Unbreakable! TR90 Memory Frame for the most comfortable fit available today in addition to unparalleled durability. Great Fashion Frame Rimless design for Golf, Cycling, Running, Fishing and all Active Outdoor lifestyles. Full Lower Vision field is unobstructed. 100% UV protection lens. The fit is so pure, it is almost like you are not wearing anything!