[TARGETED RELIEF: The R4 roller is expertly designed to alleviate IT-band tightness by targeting surrounding muscles. NON-SLIP SURFACE: Featuring a unique diamond pattern the roller provides a secure grip for a safe experience. BUILT TO LAST: The roller is constructed with proprietary high-density EVA foam engineered ABS and a center support in the core that ensures stiffness and durability. OPTIMAL ALIGNMENT: The spine and neck alignment center groove promotes proper posture during use enhancing therapeutic benefits. PAIN MANAGEMENT: ROLL Recovery products offer an at-home therapeutic treatment of pain option for breaking up muscle adhesions which may relieve pain associated with inflammation.]