Back Wrap (Large/XLarge)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> 16 powerful sewn in magnets placed to contact the back from hip to hip(1100 gauss - N) </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Comfortable， durable with hook and loop closure to let you adjust to your size and comfort. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51UwM691l9L.jpg" noproxy>