The Helly Hansen Lifaloft Insulator Jacket wraps a polypropylene and polyester insulation blend in a recycled polyamide ripstop shell treated with a durable water repellent finish. We built it to shrug off wind and light precipitation without the bulk of a heavier insulated jacket, so it layers easily under a shell or stands on its own on a cold, dry day. An adjustable hem and elastic cuffs seal out drafts, and the shell itself is made from recycled material certified to at least 50% recycled content. What Our Gearhead(R) Experts Are Saying:"I wore this through a windy trailhead morning with nothing but a base layer underneath and never felt the wind cut through the shell. The DWR finish shed a passing rain shower before I even noticed the sky had changed."