filter lifespan: 4000 liters
filter pore size: 15nm
physical effort: minimal
size: 750ml water bottle (including bottle)

Wow

That feature set is completely off the chart compared to existing portable filters. Well, a ceramic filter will have that sort of lifespan, but it takes a lot of work to use and the filter alone is pretty bulky.

If the maker isn't full of it, I will build my new emergency kit inside one of those bottles.