The Helium Hybrid Jacket is a 5.1-ounce wind jacket equipped with waterproof, breathable Pertex Shield+ fabric on the shoulders and hood. Built for fast-and-light endeavors, from trail running epics to full-on alpine assaults, the jacket's body is made from super-light nylon that stretches, blocks wind and breathes freely when you're pushing the pace in inhospitable conditions. Features Waterproof Shoulders and Hood Water Resistant Wind Resistant Breathable Lightweight Critically Taped Seams Center-Front Zipper Internal Front-Zip Stormflap Zippered Chest Pocket Doubles as Stuff Sack Reflective Logos Elastic Cuffs Drawcord Hem Key Cli Trim Fit