Sofa SackBean Bags Chair, 3', Cinnabar

Does anyone else just sink to the floor when sitting in theirs? Mine doesn't have the support it shows in the picture.

Is the cinnabar color a true red or does it have a pink tone? I see someone has described it as magenta.

If liquid us spilled on this, does it go through cover or can cover be wiped off?

My ywo bags just arrived in a small box. Is the stuffing included?