The RAD Helix has low back extension and three-dimensional muscular release down to a science. No joke, this baby puts traditional foam rollers to shame. The arched design replicates a double helix, the building blocks of the body. And for good reason too. This anatomical shape is almost human, relentlessly unlocking stiffness on two planes and flushing out toxins to promote healthy, open posture. The RAD Helix flushes out toxins and enhances your back’s range of motion with its anatomical shape that’s designed to protect the spine. Your foam roller definitely can’t do that. Oh, and did we mention it’s also killer on calves, quads, hamstrings and hips?Dimensions: 12.5" x 3"