I find it weird that low weight is one of the main selling points of this product, but they don't say how much it is.
Embers from a fire won’t burn the surface (If removed quickly).
I think that is true for many surface materials, and that "quickly" is doing a lot of work in that sentence. It also completely fails to communicate whether or not a carbon fiber chair is "safe enough" around an open fire. Annoying.
The Helinox Chair Zero is the standard by which all backpacking chairs are compared https://helinox.com/products/chair-zero - and it is 1 lb 1 oz.
And then some people mod these chairs, like this similar one that was reduced to 13 oz. https://backpackinglight.com/forums/topic/chair-enlightening...
It's so light it adds basically nothing to your carry weight. It takes seconds to put together. It's insanely comfortable. Kicking back in it after a long day's hike or canoe whilst prodding at the camp fire is such a joy.
I put it alongside my thermarest as a thing I never felt I'd ever buy and now use on every trip.