Radium Foam IDL?? Vs. Latex International

Hello,

I am trying to get some information on Radium Foam Latex. I could find nothing listed about the product’s IDL at all on the manufacture’s website. I like to know the comparison between Radium Foam’s Firmest model Vs. Latex International’s N5 core. Also how can you tell which brand of Talalay you are getting online? Most places I have called, offer both Brands and this seems like a grey area to me because they might as well give the customer any Material they have without your knowledge.

Thank you