Grey Beanie

Grey Beanies from TheRealReal

If you don’t want to splurge, this Marc Jacobs Beanie will fit the bill. It's a fail-safe choice, while not very pricey. Also look at this A.P.C. Knitted Hat. It's a product you'll fall in love with which also doesn't cost the earth. Or you can choose this Eugenia Kim Hat - be sure you'll be making a stylish addition to your wardrobe.