Helly Hansen Men's HH Dry Fly Base Layer Pant HH Dry for Warm and Dry next to skin Lifa stay Dry Technology Non-itch and allergy neutral fabric Lightweight and Dry next to skin Flatlock stitching Lifa Stay Dry Technology Flat lock stitching Low bulk cuffs 100% Lifa polypropylene fabrication Versatile base layer with exceptional moisture control.