The first thing to consider is what thickness you’ll need to support your neck. Side sleepers need a high-loft, firm pillow, while back and stomach sleepers require a thinner pillow. Then you want to think about whether you want a pillow that’s filled with a solid block of memory foam or shredded pieces. Shredded fills are more adjustable and usually washable, stretching the use you can get out of them. However, you don’t have to consistently fluff up a one-piece memory foam pillow. Finally, try to find a pillow with a sleep trial. That way, you have the security of returning your pillow if it’s not right for you.