Meet the legendary Arc’teryx Hyllus—the cozy beast of technical midlayers. Built with Polartec® Thermal Pro® High Loft fleece, this jacket brings serious warmth without the weight. It’s your go-to piece for high-output mountain missions, cold-weather layering, or après-ski comfort that still means business. The Hyllus traps heat like a puffy but breathes like a fleece, making it ideal for cold, dry alpine environments. Whether you're bootpacking in the backcountry, belaying on a chilly wall, or layering up bear the cold downtown, the Hyllus Fur brings that Arc’teryx performance edge with an extra hit of plush warmth. Bonus points for that ultra-soft, almost “furry” interior feel that makes you wonder if you're secretly cuddling a polar bear. Key Features Polartec® Thermal Pro® High Loft Fleece: Exceptional warmth-to-weight ratio Athletic Fit: Layers well under a shell, moves with you during activity Helmet-Compatible Hood: Keeps your noggin warm without messing with your gear Articulated Patterning: Built to move, stretch, and scramble Zippered Hand Pockets + Chest Pocket: Secure your essentials Highly Breathable: Wicks moisture and dumps heat when you're on the move Wind and Abrasion Resistant Outer Face Fabric