State-of-the-art layering for missions near and far. Think uphill breathability and downhill warmth with just the right amount of stretch. The women's Burton [ak] Helium Hooded Stretch Insulated Jacket delivers breathable warmth in a lightweight, pack-friendly design for backcountry missions. Its stretch fabric lets you move naturally while keeping things light and breathable. It's the midweight layer you can wear on the uptrack when it's cool and breezy or under your shell to stay warm on the descent. When the sun shines and the temps rise, it packs into its own pocket for easy stowing. Fabric: Stretch Breathable Lightweight 20D Nylon/Spandex Plain Weave Water-Repellent Coated Fabric Lining: Stretch Breathable Lightweight 20D Nylon/Spandex Ripstop Water-Repellent Coated Fabric Features: Slim fit sits close to the body, with room for the garment to move with you Stretchy, breathable, and lightweight nylon plain weave fabric Thermacore Stretch [40g] insulation offers superior warmth-to-weight performance in a low-bulk design that won't restrict your movement, providing insulation that is designed to move with you; [ak] DWR coating Attached hood with stretch binding at opening Lightweight low-profile back of hem cinch; Pocket utility loop and media port Packable into a pocket Zippered interior chest pocket and hand-warmer pockets; Reflective details Made with bluesign® materials: produced with resource-efficient manufacturing processes and using only chemicals that are safe for people and the planet Colour: True Black AK Helium Hooded Stretch Womens Insulated Jacket - True Black