You guys with your Cuben fiber are still in the heavy canvas days - Graphene
is 100 times stronger than steel, and a square metre weighs about 1/1000 of a single Diamox tablet. And it's invisible. So there.
Been watching graphene closely. The "invisible" one atom layer can maybe hold a few pounds. It would be great for the Emperor's new clothing. Here's a search link with a lot of interesting articles on one site. Graphene Search on Cleantechnica.com
The breakthroughs are not just the material, but the nanotech manufacturing processes that are being developed to make it - being able to work at the atomic scale. This is going to trigger an amazing technology revolution.
But cuben fiber still rules backpacking gear for now, if you can afford it.
Edit: I forgot to mention there's a plant in Poland about to manufacture Graphene commercially.