Q36.5 Base Layer 4 Long Sleeve Plus - UnisexWith the 4 Plus base layer, Q36. 5 brings an unparalleled focus to undergarment technology. Using Emana, an organic ceramic polymade yarn, the 4 Plus base layer has enhanced micro circulation and moisture exchange, helping to maintain thermoregulation better than ever. With hollow fiber technology, the 4 Plus traps in warm air for maximized insulation without adding excessive weight or bulk. Like the rest of the Q36. 5 base layer line, the seamless