WE HAVE ANSWERS
If possible turn the cover inside out and lay on flat surface, measure from seam line to seam line.
Take the top two corners and pull them taught, measure from seam to seam.
We recommend ordering the same size cover as your insert. We make the covers a bit smaller for a fuller fit.
We make a waterfall, knife edge type boxed cushion cover with a zipper in the back seam, no cording. They are priced by measuring (inches) and including the width, length and depth.
Yes. Zip up your cover and wash with cold water, gentle cycle and line dry.

