The Wigwam IronMan Velocity Pro II No Show Socks are the ideal performance athletic socks for athletes who refuse to compromise on features or performance. Like all of Wigwam's Pro Series socks, the IronMan Velocity Pro II keep your feet dry and blister-free by lifting moisture directly out of the foot of the sock. X2O Acrylic fibers also contain Chitosan, a natural odor-fighter that keeps your socks odor-free. And when it comes to breathability, the Velocity is one of the thinnest IronMan socks offered by Wigwam — and that, coupled with mesh vents on the top of the socks, means you'll get plenty of air. The IronMan line isn't just a name — since 1994, Wigwam has been the official sock of the IronMan Triathlon.