SockGuy EliteTech Base Layers offer a super soft, next-to-skin fit with ultra-wicking performance. We developed our fabrics specifically as a lightweight moisture transfer system to keep the next-to-skin surface driest and dramatically increase evaporation rates. Combined with our Cool Comfort Construction techniques, the fit of EliteTech Base Layers optimizes moisture transfer without constricting movement or adding bulk. Fusion Long Sleeve is the perfect fusion of our Classic and ProLite mesh fabrics. Classic mesh for core thermal protection combined with smooth fitting underarm insets to release heat.