I have a little big head and have always had hard time to find a hat that fits my head well. That one size fits all never applied to my head. I used to buy some cheap XXL hats from Amazon and those hats became rags just after some months. Now, I have found fabulous hats from Oddjob. These hats are made of good material and fits my head very well. Only some little cons: the visor seems to be in different size for each hat; I bought 2 hats and two have slightly different bills. Some hats bear the logos that steer me away from buying it. And the color collection is not great.
However, I am happy to recommend the hats from Oddjob to all big melons. Certainly, I will buy more.