Victory Up! Meet our AiRFLeX performance crew socks! The fine, performance features of this sock separate it from all others. Featuring an arrow up the back, this crew sock exemplifies performance: our Moxy Performance foot, a Colored Mesh Top, and unmatched comfort. These performance crew socks will work wonders at the gym, cycling, hiking, running, or any rugged activity. Comparable to Nike Elite and Moxy Socks’ performance APeX Socks. 4 Colorways. Save money in this 4 Color Pack.