Then there are the base-layer onesies, which beg to be worn from first chair to fireplace. The most stylish of the lot is the Shandoka 1Z 2.0 from Corbeaux Clothing, which doesn’t require you to look like a toddler at a sleepover. The Aspen-based brand simultaneously delivers cushy comfort and a roomy, athletic fit with the backcountry-ready piece. The Shandoka has plenty of performance chops, too, including a stretchy spandex-and-recycled-polyester fabric, an over-the-boot cut, and thumb loops for more hand coverage.