evo.com | Helly Hansen Long Underwear Bottoms > What do you get when you cross the 2-layer insulating technology of outerwear with merino wool? The Helly Hansen Lifa Merino Midweight Base layer Pants of course. These warm winter accouterments have a 100% merino wool exterior that delivers plenty of warmth in cold weather, while and moisture-wicking Lifa fabric interior adds breathability against sweat. These close-to-body long johns are so adaptable to temperature changes, you'll forget you had them on! 2-Layer Construction Snug, High Performance Fit Inseam 80 cm 225 g/m^2 57% Merino Wool Exterior / 43% LIFA(R) Polypropylene Interior LIFA(R) is the original Helly Hansen base layer, trusted by professionals around the world to provide warmth and insulation in cold weather. It is at its best when layered underneath another garment as it will push moisture away from skin and make sure you stay warm, dry and comfortable. Printed Performance Stripe at Bottom Hem | Helly Hansen Lifa Midweight Base Layer Pants 2026 - Large Blue | Wool