Designed for a feeling of power in the water, Arena's Powerskin Carbon Core FX open-back kneesuit for women takes compression to a new level. This racing swimsuit is cut from Carbon Cage fabric that works horizontally and vertically for long-lasting muscle compression and a locked-in feel. At the back twin-taping along the legs has a lifting effect on the body, helping it to stay high and horizontal in the water. The internal taping and lining intensify support and core stability. To add flexibility, Arena has designed the lining of this Arena kneesuit with a slim opening under the chest. World Aquatics (FINA) approved.