My tailbone pain was correctly diagnosed by my spine/pain doctor as originating from pelvic muscles that attach to the tailbone being in constant spasm. Sessions with a physical therapist trained in internal trigger point therapy has helped, but I need to work on the muscles myself. Can't go indefinitely. My physical therapist suggested that many clients have used the Crystal Wand ("therapeutic" style)to work on the trigger points, and I should consider getting one. After reading the review of the other style which mentioned a "pointiness" issue, I looked at this style which did not seem pointy and decided that actually the bulbous end might be a little easier to hold. My PT trained me to use it, and it does help. (The exercises are not "Kegels"; it's best learned from an expert.) I gave this product 4 rather than 5 stars because really, the price is too high. But it is much cheaper than continuing to see the PT.