The Rab Strata Hoodie is the result of Rab’s collaborative work with fabric & insulation suppliers. Insulated with the amazingly breathable & warm Polartec Alpha, combined with a 20 denier Pertex Microlight, the Strata allows some airflow to maximise breathability & comfort. The Strata is primarily designed for active use in cold conditions, when you are moving quickly & maximum breathability is your main priority. Polartec Alpha is a woven insulation fabric; think of it like a fluffy string vest, & is much more stable & durable than other synthetic insulation. Because of its more open weave it allows air to flow much more easily, rapidly drawing moisture away from the body creating comfortable breathable insulation for active use in in cold conditions. To maximise the performance of Alpha insulation Rab have developed a zoned nylon & polyester mesh lining fabric that is hard wearing yet allows maximum airflow. The face fabric is Pertex Microlight, a durable, lightweight & very breathable 20 denier woven nylon. The combination of these brilliant fabrics & insulation results in a new breed of active warm wear that is set to revolutionise how synthetic insulation is used in the mountains. Polartec Alpha 80g insulation Pertex Microlight face fabric Zoned mesh inner lining Over or under helmet insulated hood with Lycra binding YKK front zip with chin guard YKK zipped handwarmer pockets YKK zipped chest pocket that doubles as an integrated stuff sack Elasticated cuffs Hem drawcord Slim fit