This sort of thing can't work as it would break basic laws of thermodynamics. Best case it's a dehumidifier with extra steps.

Why would it break the laws? Per the article it uses the heat from sunlight to do some of its work, it's not some kind of magic fabric.

So a dehumidifier with extra steps.

"extra steps" meaning wearable dehumidifier. Are there other wearable dehumidifiers to produce drinking water? I don't think so.

A reductive assessment (to a specific feature) of a novel idea, does not make it less interesting.

	▲	jojobas 2 hours ago \| parent [-]
		You can wear silica gel since about 1918 - only needs some heat to get the water out and cold to condense it. Then again, why would you want to wear your dehumidifier (ok ok water harvester)? Is it for excursions into damp areas, so that you can then return to your dry home to extract water? Then, I believe everything in this video still applies. https://www.youtube.com/watch?v=EGTRX6pZSns