The Saatva Rx Mattress is the newest bed in the Saatva lineup. Saatva makes a lot of quality, luxurious beds that we think highly of — especially the Saatva Classic. The Saatva Rx, though, has a specialized design that’s meant to alleviate pain and discomfort from chronic health conditions like sciatica, scoliosis and arthritis. We’ll discuss its design features and potential benefits at length in this review.