If you're in a thrifty mode, your best bet is this Beanie. It's a great item, while not very expensive. Another great option is this Beanie Hat. While the price is not too high, be sure that this product will become an excellent addition to your wardrobe.
If you're looking for something in between pricewise, we've got your back with this Maje Beanie. This item is bound to become a total wardrobe staple.
If you're not a thrifty type, then you won't be disappointed if you check out this 3.1 Phillip Lim Hat. It's an expensive but smart option.