If you live anywhere with a proper winter, a good, versatile knit beanie is a must have. This is not an item you want to overcomplicate, and spend a lot of undue time trying to match to the rest of your outfit. When it’s below freezing, and the wind picks up, you need something that you can wear all the time, and be done with. The marled beanie is just the thing this situation calls for, classic style that will keep you covered no matter what you’re wearing.
You might even be tempted to wear it during the summer with a t-shirt. But, seriously, don’t do that.