Inspired by the latest innovations in fabric technology the Alpha Flash radically reinvents the traditional midlayer. From long, cold expeditions with limited resources to fast and light mountaineering the Alpha Flash distils everything you need into one midlayer.Made from the exceptionally breathable Polartec Alpha, the fabric wicks moisture at an incredible rate, keeping you warm and dry even when you're right at your physical limit. With flexible fleece panels either side, Alpha Flash will never hold you back; moving with you no matter how strenuous the climb.Extremely packable the Alpha Flash boasts an impressive warmth to weight ratio, making it the alpinist's ultimate cold weather midlayer.Details Fit: Slim Centre back length: (Size M): 74cm / 29.1 inches Weight: 273g / 9.6oz Outer Fabric: Fabric Outer - Thermic™:,125g/m²,100% polyester (recycled) Polartec® Alpha™ Direct’ 120 insulation Thermic™ brushed back single jersey with Polygiene® Stays Fresh Technology YKK® Vislon front zip, internal zip flap and chin guard YKK® zipped chest pocket Low bulk cuff construction Flat lock, low bulk seams Half hem drawcord