False. I owned the SP2 version of the case and it's made with REAL leather and it's a quality build overall. Cardboard? Lol umm no. Maybe you're thinking of another case.
Did you even click on the link I posted? It says right in the specs/description that it's made from real leather.
From their website...the Surface case page....first line for the red case.
"Made from high quality synthetic leather"
FYI..."synthetic" equals "fake." Their FAQ page states that all of their cases use high quality real leather...so just this one case is synthetic? Maybe.
FYI part 2...I owned the same case for my iPad and while, as I mentioned, I think the holder itself is well engineered, the "leather" portion is indeed wrapped around a cardboard core and yes, it did start to fall apart and peel away in less than 6 months....this is how I know.
Glad you have had a different experience.