Wow, this is unbelievable. Last night when I was browsing Aero website, in their Steerhide section, they rereferred to their Steerhide as "4oz Chrome Tanned Steerhide". But now as if by magic, it's all been changed to "Chromexcel Steerhide. I think this website change might have been triggered by this post. Perhaps, Aero is watching
I can see how this might be confusing. My blue label HWM was made during the old regime, and the mid-weight steerhide used might have been from a sample on hand. It is my understanding that Aero's current steerhide is CXL tanned by Horween and is the thick, heavy stuff that is full grain, not top grain.