The Nemo tents are made in Taiwan (I think by the same factory that makes the MSR shelters)
Tarptents are made in Seattle.
The TT Scarp 1/ 2 and the Hogback (4 person) are double wall tents, the rest are single wall.
The Scarp 2 is also freestanding with the optional cross poles .
Note that you need to seam seal the TT shelters, the Nemo are factory seam taped.
Franco