No pillow lasts forever. When it's lifeless, flat, badly stained, or can't be fluffed, it's time to replace it. Choose a pillow that will retain its shape while also providing proper support for your neck and spine. Besides its dimensions, one pillow is distinguished from another by its fill. Each has advantages and disadvantages, depending on the composition, price point, or care. There is a perfect pillow for everyone -- learn which one is right for you!