For the fit, I can only say that the iPhone fits perfectly inside and does not slide out everything.
Only, what to look at first, is that the Lord gutting and inserting the iPhone, the Mute and Speaker buttons a little "grind" on the inside.
This is, however, over time.
The red leather on the inside makes the casing very "smart".
The recess on the top I find generally quite cool. Only in one or Stürtz etc. this recess could be a calamity.
Otherwise, super, chic envelope and absolute buy recommendation.