Product descriptionHELLY HANSEN say...LIFA® Active is a performance base layer, delivering superior moisture management and lightweight insulation for all your outdoor activities. LIFA® Active is an advanced 2-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. Helly Hansen Lifa Active 1/2 Zip Black