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On long alpine approaches, we depend on the Rab Vapour-Rise Summit Jacket to keep us cool on the push, dry under weeping rock, and warm through the belay. The fleecy lining wicks away sweat as we move and traps warm air when we're standing still, while the treated exterior sheds ice crumbles and spindrift. As we climb, the raglan sleeves and underarm panels give our shoulders full range. When we bring up our second, the two-way front zip gives us easy access to our belay loop, and the adjustable cuffs cinch tight to ensure they don't get caught up in our device.