One figure is a vision of modern mountaineering: clad in streamlined, synthetic insulation, waterproof membranes, and modern plastic boots. The other looks like he just stepped out of a sepia-toned photograph from 1914: wrapped in heavy wool, gabardine cotton, and cumbersome leather boots treated with dubbin.
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Gone are the days of lugging heavy machinery up mountains. Today, their biometrics are tracked by ingestible sensor pills that monitor core temperature from the inside out, patches that analyze sweat composition, and smartphone-connected hygrometers taped to their skin to measure moisture buildup under layers.
(The verdict is, if you know how to use the antiquated stuff correctly, you're almost as warm as the cutting edge stuff)