What Our Gearhead(R) Experts Are Saying:"I brought the Bergtagen Topp Down Jacket on a multi-week expedition, and the box wall construction meant no cold spots showed up even after weeks of hard use. The double-layered elbows and hem held up to constant abrasion from ropes and packs without a single tear."An expedition asks more of a jacket than a single summit day ever does, and the Bergtagen Topp Down Jacket from Fjallraven is built for that longer, harder timeline. Picture weeks at altitude, gear loaded and unloaded daily, temperatures never quite climbing out of the cold, and a jacket that has to perform exactly the same on day thirty as it did on day one. Box wall construction keeps 800 fill power down evenly distributed with zero cold spots, while PrimaLoft padding at the neck and shoulders adds a second layer of insurance where warmth matters most. Double layers of fabric reinforce the shoulders, elbows, cuffs, and hem against the wear that builds up over a long trip, and a helmet-compatible hood with a two-way zipper and protective flap locks out wind at the moments it matters most. Built with a packback made from the main fabric for repairs in the field, it's designed to come home from the expedition, not get replaced after it.