Helly Hansen Women's Lifa Active Baselayer Bottoms A classic take on a performance base layer pant with Lifa® Flow technology for maximum moisture management HH LIFA is a performance base layer, delivering superior moisture management and lightweight insulation for all year activities. All in all, an unbeatable combination for moisture management, lightweight warmth and all day comfort. Lightweight insulation Lifa® Flow technology enables maximum moisture management 2 layer construction with Lifa® fibers inside and wicking technical fibers outside Flat lock seams for max comfort 130g/m2 fabric