Foam rolling: These days, it seems like everybody’s doing it. A growing body of research and bodywork pros—physical therapists, massage therapists, and personal trainers alike—extol the soft-tissue benefits of self-massage for improvements in muscular flexibility and reduction in stiffness and even pain. Gyms and PT centers are strewn with them, but how do you know what products are best for at-home use? To find out, we went shopping for you, whittling hundreds of options to a top-selling selection of the most popular roller types, and enlisting a cadre of experts and their muscles for over 45 hours of kneading and compressing. The finding: The AmazonBasics High-Density Round Foam Roller 36″ delivers the goods and proves you don’t have to spend a lot to get relief.