HELLY TECH PERFORMANCE YKK ZIPPER Adjustable bottom hem 2-layer construction Brushed tricot chin guard. In chilly, windy, or rainy weather, the Loen Jacket comes through. With our Helly Tech® Protection technology, it’s waterproof as well as breathable and windproof. It’s perfect for everyday use as well as longer outdoor expeditions. Small details with big impact include a quick-dry lining, a detachable hood, backpack-compatible design and reflective elements for visibility.