It's a Yes and No, Mostly Unsure! After a couple of uses, 4 days, the buckwheats started coming out of the pillow case from a small even opening beside the seam.
I'm not sure what the cause is, It could be that the stitching wasn't strong enough, or the mm of the thread was too small to bind the linen like material, plus, it could possibly have been an accidental slip from a box knife. I'm not sure. I decided to just stich up the thin but stought linen, like material instead of sending it back. Mainly because my Mom sure enjoys this pillow and that's all that matters on this matter, right. 🙂