What I don't love is the $73 price tag!!!
The concept is that you draw on the fabric with washable markers, when your done, throw it in the washer and you get a brand new blank canvas!
I came up with a cheap knock-off version: $5 flat bedsheets from Walmart, cut in half! My class used them as "posters" to display student objective strengths based on their previous testing data.
The kids loved the novelty of being able to write on fabric! (And I felt a little bit greener not wasting paper!)