If you're looking for the best side-sleeper mattresses, welcome. You’re in good company, as many of the WIRED Reviews team are also side sleepers. Many of our testers side-sleep and can speak to the necessity of these mattress performance factors firsthand, including director Martin Cizmar and reviewer Julia Forbes, a certified sleep science coach. Of those hundreds of options, we whittled it down to our 12 that we wholeheartedly can say are the best mattresses for side sleepers. Be sure to check out our other sleep guides, including the Best Mattresses, Best Organic Mattresses, and the Best Body Pillows for Side Sleepers.