The 2" topper I got from O-stock was labeled Latex Green 15ILD and was beautiful, no flaws. This is Dunlop latex, so it is firm. It is on the bottom of my layers. No way can you sleep on this as a top layer unless you are over 250 lbs. It is a good bottom layer however. The 2 other O-stock layers I bought of the 1 1/2" layers were not labeled, but were softer than the LG 15ILD, just a tad, no major flaws (it is Dunlop). The only flawed one I had was the 23ILD Latex International (labeled obviously) that had a 6" x 1-2" flaw, as in missing latex. So that was not a good piece, but it opened my eyes to this wonderfully soft layer.
If you don't mind taking a chance on latex and trying it out, it is cheap, and it is doing me a great service as my bottom 5" layers. So I can't complain. Yes, it is a grab bag, and some are labeled, most are not. I used the 1 1/2" 23ILD piece under the 2" 24ILD and it is fine, I just stuffed pieces of latex in the gap, and I don't feel it. Since I had no clue what I needed or wanted, it has worked for me in the end. But it did take 2 years and lots of work on my part.
I hope people start googling this, because I am not going to keep repeating this, LOL. Since I have now fixed my mattress (it only took 2 years), I will not be visiting as much here. Since adding the 2" 24ILD LI natural talalay from RMM, that was also a beautiful queen size layer also, I am completely happy now. I do need to find a thin cotton layer for the top to keep it cool however. Also I am glad Rocky Mountain Mattress does not take returns on toppers because I did not want to risk getting a returned layer sent to me! Also they are cheaper and if you have a good idea what you want it is worth it.
P.S. The search on this forum does need some improvement because it is hard to find the exact thread you are looking for. I am looking for my posting about the fabric that I found that was from a fabric company online and I can't find it! Edit: I found it, search does work but it is tedious it was on page 5 of the search. Here is the link
http://www.fashionfabricsclub.com/catalog_itemdetail.aspx?ItmID=TC0651 for the cotton terry velour fabric. I am going to see about getting that. It sounds so soft.
I do thank you for this forum, I have learned a great deal, and I hope to have helped some people along the way. We consumers have to find a way to find a comfortable sleeping surface. Mine was a DIY and I did save some money, but I also wasted some money on mattress pads, memory foam, and of course the S brand mattresses and Europa brand mattress. So I will never buy a traditional mattress again, and hope I can always purchase latex toppers, because in the end that is what worked for me.