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Oh, yeah. they've been working on it for years [1]. You're probably thinking about the same articles I am, from 2012 when all the blogs picked it up as "better than steroids" [2]. I'm with you - I thought they'd have a consumer product out by now. Also, there's some debate about whether this actually works, but I did some personal testing years ago when I had access to a treadmill and was able to jog longer with my hand cooled.

1. https://www.sciencedaily.com/releases/2004/10/041006085310.h...

2. https://gizmodo.com/stanford-is-building-a-body-cooling-glov...

Yep, I bet that's it—thanks! :-)

From 2002: http://news.bbc.co.uk/2/hi/health/2354135.stm

Referenced here: https://slate.com/technology/2012/09/avacore-technologies-ma...

I've spent an unhealthy amount of time trying to figure out how I could DIY it, but never came up with a plan that I thought was likely to work.