Helly Hansen Lifa Merino Midweight 1/2 Zip Base Layer - Men's Carry-On Radio frequency welded seams are

Radio frequency welded seams are bonded at the molecular level

and more while improving taste by reducing chlorine and odors

but now in 1/4 sock height

and board feel across varied terrain

Lightweight

Helly Hansen Lifa Merino Midweight 1/2 Zip Base Layer - Men's Carry-On Radio frequency welded seams areOur LIFA Merino Midweight collection is perfect for any type of cold weather activity. We combined a 100% Merino wool layer with our proven LIFA fiber technology in a 2 layer construction. This LIFA Merino Midweight layer delivers all the breathable, natural warmth of Merino wool, plus the unique moisture management properties of LIFA fibers. LIFA MERINO 100% Merino wool exterior Flat lock seams for ideal comfort and durability 2 layer construction