Canva Artboards by Cranson : Do they stand up to time?

I have just started oils in February and am looking for what I can paint on. I loved using Blocks for watercolor. I have been painting on canvas until now. The other day I found Cranson Artboards in a Block for Plein Air. Who has experience with this. I do like the surface and they are light in weight. My instructor was not familiar with this product. Any comments helpful.