DonJoy Armor Knee Support Brace with Standard Hinge: Standard Calf Length， ACL (Anterior Cruciate Ligament)， Left Leg， Medium<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> Treat or prevent moderate to severe ACL instabilities， recovery from ACL reconstructions， and hyperextension prevention </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Designed for athletes involved in extreme or contact sports， who don’t want to sacrifice speed </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Many collegiate football teams require their linemen to wear this knee brace because it is so successful at preventing ACL injuries </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Sleek， low-profile knee brace made with a strong aircraft-grade aluminum frame </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Helps improve your natural gait by applying progressive resistance before reaching a firm end point during movement </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41LJYR0EqbL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51fdg8tMfaL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41l3hQAXmbL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/01akNUttFZS.png" noproxy>