I'm not one to spend money on fancy clothes or accessories.. I have a nice pair of Versace shades that an old girlfriend got me for driving and a pair of Smith & Wesson shades for shooting & what-not. I've forgotten my nice shades numerous times and had to wear the Smiths, and I too got headaches. I know it's not really on topic...I just wanted to say...Sometimes, you really do get what you pay for. The function is there....I just look sexy and baller while I'm functioning.