Berghaus mens rg alpha waterproof jacket the mens rg alpha waterproof jacket is the perfect partner for a day on the hills berghaus hydroshell fabric technology guarantees outdoor performance is breathable and completely waterproof allowing you to stay active whatever the weather with aq tm 2 technology alongside features such as an adjustable roll away hood and two zipped hand warmer pockets both functionality and performance are delivered on the hillside features additional wet wea