I remember the original Sony Playstation active 3d glasses had a very aggressive bend to their temples..... literally squeezing on the sides of your head above your ears... which literally would start to give me a headache before the end of a movie. I found an effective fix to be the hot water/cold water trick. Get a pot of water on the stove and get it very hot ... probably doesn't have to be boiling.. . I would dip one temple in the hot water for a minute or so. This makes the plastic very maliable and I would bend it out a bit and hold it in place, then quickly take it to the sink and run it under cold water to "set" it in its new position.... Then just repeat for the other temple. This was quite effective in taking the excessive "squeeze" out of the glasses... making them much more comfortable for those with a larger head!