when the description said the zipper was on "the side" I thought that meant the side edge of the pillow. the zipper is actually just offset to one side on the flat side of the pillow making it neccessary to remove the pillow from the cover if you want to flip your pillow. I normally flip my pillow each night and now I can only turn it around, rather than flip it unless I want my face pressed against the zipper. very disappointing. the material is fine and not very noisy. I would re-purchase if the zipper was on the edge.