If you don’t want to splurge, this Beanie will fit the bill. It's a foolproof choice, while not very pricey. Another savvy option is this Crown Cap Beanie Hat. While the price is not too high, be sure that this item will become an excellent addition to your wardrobe. You may also want to look at this Y-3 Beanie. This item is not expensive either, but it will make a difference in your wardrobe.
If you're looking at it like an investment piece, then what you're looking for is this Loro Piana Hat. It's more expensive but worth your money. While you're at it, also have a look at this Fendi Beanie. Yes, this item is expensive, but it does not mean it's not worth it. And how about the luxurious Canada Goose Knitted Hat? Yolo, right?