Check the listing for details. Low Density Soft/Medium Foam Physical Therapy Roller (18" Half Round). Color: Yellow, Condition: New. Listed at 40.93 USD. Designed for rehabilitation, elderly users, or when feeling extra soreness from injury. Gently roll on soft tissue for massaging sore muscles, myofascial release, and trigger point relief. Softer than traditional Black or White Foam rollers but still firm enough to be effective.