The North Face Women's Thermoball Hoodie proudly features a new synthetic insulation technology that offers the best qualities of both down and synthetic. That job sounds like so much fun, designing insulation. I wonder what insulations they've come up with that didn't work out. Thermocube? Heatpyramid? "The Heatpyramid kept me warm.... but I wasn't a fan of the puncture holes in my skin." Anyways, Thermoball is the real deal and closely mimics the heat-trapping structure of goose down. The equivalent of 600-fill down, this mid-layer is sure to keep your temperature regulated in cold conditions, while being compressible and water resilient. Putting up the hood adds to the versatility.
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