Card captor Sakura 20th Anniversary Illustration Collection is an artbook collection compiling art and pictures made by CLAMP, the creators of the manga series Cardcaptor Sakura. It was released on March 24, 2016. The only new Illustration is the Cover. All the others are a selection made by CLAMP themselves.
The Artbook come with a plastic case and a big poster with a timeline of the series’ publication and a merchandise catalogue.
Unless the other artbooks, this one has a hard cover.