Magnetic Back Support Belt From Dr. Bakst Magnetics， Large<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> 28 Neodymium and ceramic magnets for a total of 33，000 Gauss power </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Control the fit with the adjustable Velcro closure </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> High-quality Neoprene allows for wear as a light back brace </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Hand washable </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Available in 3 sizes; Small (23" to 32" waist)， Medium (32" to 40" waist)， Large (40" to 50" waist) </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31-imezJM4L.jpg" noproxy>