2-layer system enables maximum moisture management while keeping you warm all season long. HH LIFA Mid is a performance base layer, delivering superior moisture management and lightweight insulation for all year activities. HH LIFA Mid is an advanced two layer construction with 100% Lifa® fiber next to skin and wicking technical fibers outside. All in all, an unbeatable combination for moisture management, lightweight warmth and all day comfort. Weight: 300g lightweight insulation Lifa® Flow Technology 2 layer construction Lifa® fibers inside Wicking polyester outside Flat lock seams 130g/m²