HELLY HANSEN MENS LIFA ACTIVE STRIPE CREW BASE LAYER BLACKOur 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. The LIFA ACTIVE Stripe Crew has an advanced 2 layer construction with 100% LIFA fiber next to skin and wicking technical fibers outside. We added bold sleeve stripes because base layers dont need to look basic. All in all,