i can't seem to wear them both. i have a fitted hat, and when i put the arms under the hat, my hat is too tight. but if i try to go over the hat, it feels like its stretching my glasses outward and they dont feel as secure on my head because their on the hat and not my head. i recently got a jeep, and on really sunny days, i would like to have a hat to protect my head from getting burnt. but i dont feel safe with the sunglass arms on the outside of the hat, because if a gust of wind comes and takes my hat, it will most likely take my oakleys too. i was thinking about getting the quick cap. its lightweight and adjustable. maybe i could just adjust it a little looser to accommodate for the sunglasses underneath.