Helly Hansen Jr LIFA Merino Midweight SetHelly Hansen's warmest juniors base layer set, combining unique Lifa wicking technology with merinos natural breathable warmth. The best kids base layer on the market uses a clever 2 layer construction to keep active youth dry and warm. Helly Hansen's Lifa technology wicks away moisture while soft merino wool creates breathable warmth. 2 layer construction 215g m2 fabric weight