LIFA ACTIVE is a performance base layer 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. LIFA: LIFA is the original Helly Hansen base layer made of 100% LIFA fibers, providing warmth and insulation in cold weather. LIFA naturally pulls moisture away from skin and to the outer layer of the garment keeping you warm, dry and comfortable. FEATURES: 2-layer construction, Iconic performance stripes along the sleeves, Excellent moisture management properties, LIFA fibers interior, Wicking polyester exterior, Flat lock seams GOOD FOR: Camping & Hiking, Climbing & Mountaineering, Trekking, Resort, On Piste, Alpine, Winter, Skiing FIT: Regular - Neither slim nor oversized. Regular-fitting garments may be worn over thicker midlayers. Pants will have a standard inseam with a cut that's straight through the leg. Experience unparalleled comfort and performance with the Helly-Hansen LIFA Active Stripe Crew Men's Baselayer, meticulously crafted for outdoor enthusiasts who demand excellence. This lightweight thermal shirt combines Helly-Hansen's heritage of resilience and innovation, honed over 140 years, with cutting-edge LIFA technology to deliver ultimate breathability and moisture-wicking properties. Designed to keep you dry and comfortable, whether you're tackling rugged mountain trails, skiing down pristine slopes, or navigating open waters, this baselayer is an essential addition to your gear. The Helly-Hansen LIFA Active Stripe Crew is engineered with professional-grade precision, ensuring you stay warm and agile in the most challenging conditions. Its sleek stripe design adds a touch of style to its functional prowess, making it not only a practical choice but a visually appealing one. Trust the brand that outfits over 55,000 ski professionals globally and partners with world-class sailors to bring you a baselayer that embodies the spirit of adventure and the legacy of Scandinavian craftsmanship.