I consider myself somewhat of a sleep sommelier, a connoisseur of cozy. For me and my 14-year-old Calico Phoebe, cat naps are part of our daily routine, so we can never have too many blankets around.

A good throw blanket should be cozy, durable, and nice to look at, too, since it’s usually on display, flung across the back of the couch or placed at the foot of the bed. And because it takes a ...