We encourage everyone to test multiple settings for their best personal solution, however: 1) STOMACH AND BACK SLEEPERS, typically need low loft and soft. Leave the inner pillows with the blue tag and set the red aside. 2) BACK AND SIDE SLEEPERS, Most sleepers move around at least 30 times per night. Leave the pillows with the red tag for a medium experience. 3) SIDE ONLY SLEEPERS, If you are a side sleeper or just an avid TV watcher, you’ll love the firmest setting. Don’t worry: it’s still plush and puffy!