Ikea Äpplarö Rain boots

Since our terrace holds the water when it rains, I needed something to protect our garden table from getting soaked. So I took FreeCAD and then designed my first thing.
Hopefully I can help anybody out there who has similar problems.

I attached some hooks to be able to hold the canvas (for protection from the top), but am not sure how stable these will be (in fact, I broke 2 of them while removing the supports :().

If you want to remove them, do so; just use the attached FreeCAD file.