White knows Arctic Challenges well. He’s traveled to the tip of the iceberg and delivered the heat…on multiple occasions. Wherever sub-zero weather finds you, keep your internal engine firing at prime levels in this warmth and mobility boosting banger. Higher heat zonal mapped insulation in the body delivers cold snap relief where it counts, while thinning out in the sleeves and hood so you can still cork your double. DRYRIDE Durashell™ 2L fabric wraps the Shackleton Jacket’s entire package in unstoppable waterproofing and breathability.