Powerstep Men's Recovery Compression Socks 20-30 mm Hg gradient compression to enhance circulation for faster recovery Advanced knit structure with ventilated design and Coolmax fibers for cool, comfortable wear Figure-8 support to increase stabilization of the ankle and arch Embedded Achilles and arch support for added support to the tendons to alleviate aches and pains Bamboo-charcoal fibers for odor-reduction and regulation of temperature, bacteria and perspiration