Shangri La 3 fly material questions

My green 2013 Shangri-La 2 uses a combination PU/Sil coated 15D fabric. I think one side is Sil and the other is PU, but I'm not sure.

That's all I know, hope it helps!

Oh! You could also use the Wayback Machine at archive.org to check out past versions of the product page. That would give you the most definitive answer.

but it was still silnylon i believe

As far as I know, they were all PU coated nylon, at least the ones with taped seams. The older non-taped seamed ones may have been siliconized nylon.

i'm sure about that:
outside fly: 15d nylon+silicon
inside fly :15d nylon+PU+tape

if earlier version with no tape(hex 3),i think is silnylon 30 d on both side.

These replies are correct. They changed their materials at some point. The older fabric is far superior in my opinion. I've owned both.

The older – original – material is a beefy silnylon that performs exceptionally well. Virtually zero water retention. Very little stretch. Not taped, but back then they supposedly used a thread that swelled slightly to "seal" the holes. I can tell you that I have the older SL3 in some insane conditions many times in the Pacific Northwest and I've never had leakage. No seam sealer at all.

The newer material is much thinner. Sil outer and poly inner. It is taped. The lighter fabric cuts a few ounces off the shelter, but some of that is made back up in extra features. All told it's about 3-4 ounces difference is all.

I got the new one and almost immediately sold it. I found the fabric was too thin (never failed & may have just been my imagination about seeming weak) and didn't like the poly at all. Way more condensation. Poly wears out eventually. Sil doesn't really. Packing it up felt like I was packing a soaked towel. The older one feels almost dry after a good shake.

Sold it and got lucky and found another original SL3. Might even be a Hex 3. Now I have two. One is almost stock. One is modified and lightened a bit. They're hard to find now, but amazing how well they stand up even a decade on. I'd happily replace it with something equal/better, but I just haven't found anything yet.

I do consider selling one of them since I only use one, but I wonder if I'd regret it someday.