14 Foam Rollers, Balls, and Sticks That Help Get the Knots Out

Many runners still roll around on rock-hard lacrosse balls to work out serious problem spots. So Pro-Tec tweaked the composition of its two foam balls—a higher density foam makes them firm enough for serious massaging power. The larger Orb Extreme (4.5 inches) is suitable for rolling out quads and hamstrings, while the “Mini” version (3 inches) isolates areas that require deep-tissue release. $15-$25, amazon.com