The Ultra Compression features a seamless, 200 needle count lightweight design to reduce recovery time and muscle fatigue. Whether on a training run or competing, the Ultra Compression has graduated compression starting at ankle continuing through the upper leg to aid in circulation and blood flow. The Nylon fibers make the Ultra Compression feel soft to the touch, yet durable with breathable mesh on the top of the foot and on the back of the leg. Sporting reflective stripes for extra visibility, the Ultra Compression does not slip after long runs and wicks away moisture keeping your feet dry and protected - anywhere your shoes take you. The Over the Calf length rests at the bottom of the knees.