The Big Bend Backnobber can be used comfortably by virtually any adult of average to large height and weight. It is, however, especially designed for large people who weigh 200 pounds or more. The Original Backnobber is hand crafted from a manufactured steel bar, bent in the shape of an "S" with wooden balls, one relatively small and one somewhat larger, permanently affixed to each end. The tool is used by hooking the device over a shoulder or under an arm and using its leverage to apply direct, deep, steady pressure to trigger points in the muscles of the neck, shoulders and upper and lower back or any large or small muscle in the body where a trigger point might occur.This pressure followed by careful, regular stretching and strengthening exercises can, over time, significantly reduce muscle tension. The Big Bend Backnobber measures approximately 26 inches in overall length with one curve nine inches across. The larger curve on the Big Bend Backnobber measures 15 inches across providing substantially greater reach and leverage for people of larger girth who appreciate its generous proportions. Because of its size and shape, the Big Bend Backnobber has a somewhat more flexible feel than the regular Backnobber. Proudly made in the USA.