Had these covers since Sept. 2015.  After 3 seasons use the canvass easily tears, like really brittle.  Went to a canvass shop to have them repaired.  They gave up after trying to repair the tears, and $54.00 later!  Something is wrong with the material here.  I loved the looks of them, but they are not durable.  I hesitate to reorder these 
from Wayfair.  Thanks for listening.