You're standing in your closet trying to get dressed for golf when you realize you only have one pair of black shorts and one yellow polo clean, but you really wanted to wear your new Oakley hat to match your sunglasses - then you remember you can switch out the Oakley logo on your new Interchange hat! You throw in the yellow logo and hit the links looking twice as good as the rest of the foursome. Now, if only you could hit the ball as well as you look... SM/MD fits 6" - 7 1/8"; LG/XL fits 7 1/8" – 8". Sizes are approximate.