If there's one thing you need in the colder half of the year, whether you're 18 or 81, it's a navy sweater. Hard to argue with versatility. Our classic crewneck sweater is exactly what it sounds like, with a slim — but not tight — fit, a saddle shoulder, and ribbing at the neckline, hem, and turnback cuffs. It's made of midweight, 2ply Mongolian cashmere that only gets better (read: softer) with age.