Targeted Hip Pain Relief. The NatraCure(r) Arthritis Hip Wrap delivers deep hot/cold therapy to aching or swelling joints. The secret is a removable gel pack, which is lightweight and flexible enough to keep up as you go through your day. Simply heat the gel pack in the microwave or cool it in the freezer, and then slip it into the Arthritis Hip Wrap. Cushioning mesh layer directs hot and cold towards the body, while the band stretches to accommodate any body shape. For size measure around the waist: SM (20″-40″), LG (40″-54″).