The Insulator Endurance Tights are the ultimate cold weather support tights for the endurance runner, skier, and all around athlete. WarmStretch™ temperature-regulation fabric is used to maintain a constant comfortable surface temperature in a variety of conditions. CW-X Pro Tights unite the major joints of the leg to offer optimum muscular support for activities with linear movement, such as running and Nordic skiing. The patented CW-X Support Web™ brings the hips, knees and ankles into proper alignment, reducing impact and load to the legs. The CW-X Support Web™ also creates a suspension system for the hamstrings and quadriceps, reducing workload in both the pull and push phase of the running motion. Combined with targeted variable compression to increase circulation and reduce fatigue, your muscles don’t have to work as hard over time and your legs will feel fresher.