Part of Eddie Bauer’s First Ascent line designed to perform in demanding, high-alpine conditions, the Microtherm Stretch is a truly lightweight and durable puffy midlayer. Constructed with a windproof, ultra-tough ripstop polyester shell and coated with an impressive DWR for increased moisture repellency, this piece gets its warmth from 800-fill StormDown, which retains its loft even when wet. With durability at an all-time high here, this layer works just as well on its own as it does underneath your shell of choice. So, keep it close at hand, whether you’re getting lift-accessed powder turns or earning them deep in the backcountry.