Tempur-pedic Bed Pillow and Pillowcase Memory Foam Standard Queen 19" x 24" x 4"

Tempurpedic Bed Pillow and Pillowcase Memory Foam Standard Queen 19" x 24" x 4-5" approx measurements. This was mine, I purchased from a furniture store, I didn't use it much. There was a stain I tried to get out on the pillowcase, the stain is out but the area I scrubbed is a bit stiff see 3rd picture.