I stumbled across this kind of odd find. The Klymit 2013 Double Diamond Vest .The technology sounds intriguing.
Has anyone seen one in the flesh?
You can inflate it with Argon to increase the insulative properties
http://www.klymit.com/products-1/kineti ... ond-1.html
Here's a review by John Abela
http://hikelighter.com/2013/06/11/klymi ... mond-vest/
Sigh. Of course no women's cut (grumble grumble).
Do they think to be a gear junkie requires a Y chromasome??