MyPillows are stuffed with shredded polyurethane foam. A person has to injest it for it to cause harm and no one eats their pillow.
Nobody has done a forensic audit on MyPillows. There are questions raised in internet videos and unnotarized affidavits written in English from Italian lawyers that perhaps BPA is involved. Not only is it possibly causing cancer, but BPA is an estrogen that causes small boys who sleep on MyPillows to become queer or transgirls.