After 1 year the Mylar is starting to separate in a thin layer on the bottom of the tent. This seems to be a common issue with Mars hydro which is disappointing. As my vivo sun tents have not done this, just the mars hydro, I have read of other people experiencing the same issue. The floor starts to look like it is moldy but when you inspect you can see a clear plastic layer separating from the bottom. For an expensive tent this is something that needs to get addressed. Other than that the construction is sturdy and the canvas is thick.