Compression Socks， Extra Firm Support - Knee High Gradient Compression， Unisex， mmhg Rating Tested and Quality Assured. Designed to help with...<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> Nylon 74.3%， Spandex (Lycra) 25.7% ReliefWear by BOSTON ENTERPRISES™ </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> SIZE CHART is shown in second photo. C0RRECT FIT requires measuring foot， ankle， calf. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> WELL MADE， TOUGH， HIGH QUALITY， Long Lasting without losing their compression and a reasonable price </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> HAVE MORE ENERGIZED LEGS， helps Reduce Fluid Buildup， Chronic Leg Fatigue and ugly varicose veins </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Heel Design keeps the sock in place as does the Non-Binding COMFORTATBLE CUFF TOP RIBBING </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> X FIRM Graduated Rating of 36-41 mmHg at the ankle， 25-30 at calf， 17-22 top. Knee High Support Sock </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41RyLym%2BaSL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41lr70bKo3L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51lLoCkJ7-L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51lPG%2BQYH%2BL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41KoSjpsNKL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/319GcRYmujL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51r713lKgEL.jpg" noproxy>