Designed and developed for climbing, the Men's Alpha Guide Jacket from Montane gives effective insulation to the core body whilst leaving the arms free from any restriction. It combines the unique properties of Pertex Microlight Stretch, Polartec Alpha and DryActiv Stretch to create a truly formidable jacket. A great jacket it provides torso protection in a new and unique way, using the revolutionary Polartec Alpha - the latest evolutionary step in synthetic insulation. With its open, woven construction, Polartec Alpha combines warmth with hyper breathability, whilst at the same time being extremely compressible. This new format of insulation is encased in Pertex Microlight Stretch, which provides high wind resistance combined with the stretch needed for climbing movement. The jacket also features a stretch hood that fits underneath a climbing helmet and stretch arms with thumb loops. The Alpha Guide is not so much a piece of clothing, rather a piece of climbing equipment.