Develop core stabilization, lower body balance and stamina with the High Density Foam Roller. Its sturdy and resilient, with the high density molded foam retaining its shape even after heavy use. This ultra-rigid roller can be used for gentle stretching, trigger point therapy and self-mobilization of the spine and joints. The High Density Foam Roller is available in either full or half rollers in either 12 or 36 lengths. High Density Foam Rollers Features The high-density molded foam technology retains shape after heavy use. Ultra-rigid to help achieve optimal fitness results. High-density roller lasts longer than traditional foam rollers do; built to hold up to the most rigorous and demanding roller applications and rehab or training exercises.