Imagine a light shirt that automatically puffs out into a jacket when the temperatures drop. A textile lab is working on a fabric to do just that. This is a step upwards from the inflatable clothing I have written about before. I think it still has a way to go before it replaces wonderful down garments such as Montbell’s, but it sure is an interesting development: https://gearjunkie.com/watch-fabric-transform-t-shirt-puffy
Like this: https://www.youtube.com/watch?v=e-shuegwsrI
See also:
http://www.theultralighthiker.com/unbearable-lightness-of-being/
http://www.theultralighthiker.com/inflatable-insulated-clothing/
http://www.theultralighthiker.com/montbell/
