Some others- like the $400 jacket- might make you laugh.
http://www.wired.com/gadgetlab/2012/02/ ... ewall=true
But mainly, I hadn't heard of merino wool before, and wondered if it could be handy under some cave coveralls? Supposedly it breathes well when you're hot and wicks away sweat.
"Heck, it doesn’t even pick up body odor."
?
There's a new Petzl headlamp in there, and a hydration back pack that sprays water into your mouth. For those times when you are too tired to actually take in a sip or two.