Outdoor Research MicroGravity Jacket - Men's Black Small. You also need a shell that can breathe when youre working hard uphill. But the trick is you dont want to carry along the weight and bulk of two different jackets. Enter the Microgravity AscentShell Jacket: The solution to your crazy-weather yet crazy-exertion alpine adventures. With such stellar breathability and every feature youd need to be comfortable in the mountains youll never have to compromise on protection again. Since 2016 Outdoor Researchs proprietary AscentShell technology uses an electrospun process to create a 3L construction that breathes faster weighs less stretches more and far surpasses the comfort of traditional waterproof membranes. Specifications for Outdoor Research MicroGravity AscentShell Jacket - Men's: Manufacturer: Outdoor Research Apparel Fit: Trim Length Alpha: Regular Gender: Male Age Group: Adults Sleeve Length: Long Sleeve Jacket Style: Active Pockets: Zip Chest and Hand Pockets Left Hand Pocket Doubles As Stuff Sack Last Chance: Yes Features of Outdoor Research MicroGravity AscentShell Jacket - Men's Waterproof Windproof Fully seam-taped Breathable Air permeable Movement-mirroring stretch Design features Helmet compatible halo-hood with hood lock YKK aquaguard zippers Internal front stormflap Zip chest and hand pockets Left hand pocket doubles as stuff sack Carabiner loop Key clip Dynamic reach underarm panels Elastic drawcord hem Hook / loop cuff closure Package Contents: Outdoor Research MicroGravity AscentShell Jacket - Men's Outdoor Research 2743890001006: MicroGravity Jacket - Men's Black Small