X-Socks Trekking Energizer Sock
Here's what other sites are saying:
Give your heart some love through your feet, with the X-Socks Men's Trekking Energizer Sock. Because the Trekking Energizer socks apply a gradual compression to your foot, your blood re-circulates to your heart faster. This improves circulation, letting your heart and pulse chill out while you rock it hard throughout your hike.