I just got back from a 4-day firearms course where I used these every day, all day. We were outside 95% of the time in the blazing-hot, blinding sunlight of the Nevada desert. The Wiley X Valor Sunglasses were excellent! There is just the right amount of shading as well as vision enhancement from the blue-blocking tint. My eyes are very sensitive to the sunlight, so I was afraid I would have difficulties with my vision while I was out on the course. However, I had nothing to worry about - these sunglasses performed perfectly. My only complaint is the ear arms are too thick - after 4 days of wearing these under my had and a pair of electronic shooting ear muffs, the top of my ears were rubbed rawPros: Stylish, lightweight, excellent light shielding and viewing colorCons: Over-ear arms are too thick, rubber ends look a little frayed after heavy useHighly recommended