The PSO-RITE is the ultimate psoas massager and full body self massage tool. It's great for accessing, activating and ultimately releasing tight muscles, especially psoas tightness. Think of it as a 24/7 massage therapist you can take with you anywhere you go. The PSO-RITE is designed to mimic the hand and elbow. This design makes it much easier to press deep into the psoas, shoulders, hamstrings, etc. and activate difficult to access areas.