In the coldest, wettest conditions, warmth and dryness are equally critical. That\'s why the men\'s Burton [ak] Helitack Stretch Jacket is powered by a sustainably-superior bluesign® approved combo of mapped stretch insulation and Burton-exclusive GORE-TEX two-layer fabric. The elemental result is ultimate warmth, waterproofing, and breathability even in the wettest conditions. The full package is backed by our lifetime warranty and includes a full array of features, such as YKK® water-resistant zips, a removable snow-blocking waist gaiter, and an internal dump pocket for on-hill supplies.