Which mattress is best for side sleeping? You'll be sleeping comfortably no matter which mattress model you choose! Compare our mattress models HERE. Or take our Mattress Finder quiz to help you find the mattress that best suits you, HERE. Related articles Which mattress is best for partners with mixed preferences? Which Purple® Mattress is the best fit for me? What is the height of the Purple® Mattress? Is there an adjustment period for the Purple® Mattress? Does the Purple® Mattress go on top of an existing bed?