Hip Flexor Release Tool - Psoas and Iliacus Muscle, Hip, Back, Leg Pain Relief. AMERICAN MADE: 100% designed, engineered, and made in the USA. Patent No.: US 11,622,899 B2 ON DEMAND RELIEF: Specifically designed to replicate sports ortho Physical Therapist hands while doing a hip flexor release. TARGETS TWO MUSCLES: Engineered to target BOTH the iliacus and psoas major muscles. The tip is approximately 3.5" in width and MAY NOT BE SUITABLE FOR ALL BODY TYPES. Smaller frames may find it difficult to properly use the product. GET BACK TO DOING WHAT YOU LOVE: Lessen and eliminate hip, back, and leg pain caused by hip tightness with the Hip-Fin. INCREASE MOBILITY: Maximize your mobility to allow for full expression of power and strength in your musculature.