MAGNETIC SUPPORT FOR LOWER BACK may help prevent strain and relieve discomfort, spasms, and stiffness in the lumbar area. For centuries, holistic healers have touted the therapeutic power of magnets, and there’s no denying the beneficial effects of warmth and compression when applied to painful areas. Light­weight neoprene wrap has 20 sewn-in magnets plus adjustable hook-and-loop closures to fit most waist sizes. 36" L.