As warm as it gets. Ultimate shelter for the absolute coldest conditions.. Don't let the cold snap stop you! 550 duck down fill makes this jacket the warmest in the boys' line. Venting Pit Zips(R) let you hike without overheating. Add in durably weatherproof 2L fabric, a waist gaiter that connects to any Burton youth pant, music-friendly media pocket, and a helmet-compatible hood, and you've got the ultimate jacket to charge from sunup to sundown.