White Beanies by Free People
If you'd rather not spend much, your best bet is this Free People Beanie. It's a popular item, while not very pricey. Another smart option is this Free People Beanie Hat. While the price is not too high, be sure that this product will become a valuable addition to your wardrobe.
For something in the middle of the price range, look no further than this Free People Knitted Hat. This item won't break the bank, but absolutely invaluable in your wardrobe.