Don’t sleep on the benefits of down and feather, though. For one, they’re so good to sleep on. Feathers bring firmness, heft and support to the pillow game, while down offers softness and comfort. The ideal balance is 10 to 25 percent down and 90 to 75 percent feathers, but for pillows that are more for sleeping than decoration or back support, a near 50/50 balance will work about right. Though it will be more expensive due to the higher price and percentage of down, when your head rests on top of it, you’ll appreciate the extra softness—even if you have to fluff it back into shape when you get up.