LIFA ACTIVE 1/2 ZIP. MENS. Shell: 65% Polyester (Recycled), 35% Polypropylene. Our best performance base layer for quick moisture management made for year-round action. 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. LIFA® ACTIVE|2-layer construction|Excellent moisture management properties|bluesign® product|Recycled Content