With 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 knit Karl Mayer construction rewards riders with incredible flexibility unmatched comfort.

With all these technologies combined with an extended neck collar, there's no better choice for riders who still need to train hard no matter how sever the weather is outside.