Reviewing this from the POV of an end user & tech fabric geek. Love the materials of the MH AirMesh. Already have the hoody; just bought the crew. Agree w/ those who say it's very warm when at standstill or w/ a wind layer over top, yet while moving or with wind and no wind layer it's like being naked. To me that says the fabric is functioning precisely how a base layer shoulder. Only con is hypothetical: delicate fabric. I've had no issues with snags, pilling, abrasion, etc. But I wouldn't be surprised were I to, given the softness of the fibers and the openness of the fabric they're arranged into. Cut/fit are unremarkable w/ exception of the somewhat high neck hole and the different accent fabric used there. Packs tiny, resilient fibers bounce back into shape immediately. Most comparable to the Patagonia Cap Air wool base layer, minus the itchiness/roughness and the ultra premium price point. Also, like Polartec Power Stretch pro, but much lighter and more airy fabric, fwiw.
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