The Wigwam IronMan Lightning Pro Low Cut (No Show) Socks are the ideal athletic socks for athletes who need sleek, lightweight socks that match their performance. Like all of Wigwam's Pro Series socks, the IronMan Lightning Pro are designed to really keep your feet dry and blister-free by lifting moisture out of the foot of the sock. X2O Acrylic fibers contain Chitosan, a natural odor-fighter that keeps your socks odor free. The Lightning Pro also contains Dri-release fabric, a synthetic fiber that drys extremely fast. Thin venting along the top of the foot ensure your feet get all the fresh air they need. The Lightning is similar to the IronMan Thunder, but with a bit less cushioning, creating a lighter design. And the IronMan isn't just a name — since 1994, Wigwam has been the official sock of the IronMan Triathlon. The Lightning Pro is also available in a Quarter Crew cut.