I think up front stating canopy is 12 x 10 if should also state from pole to pole actual size is  10 x 9. Not in the small print.  This canopy can be on grass, wood or concrete. Stakes are provided for grass.  It should state no anchoring provided for wood or concrete.  I like the canopy, the material is a good quality. Just disappointed on the size, as I could have bought a larger one for the space I have.