This is from an email I received and I thought I'd pass it along as once in awhile I hear from people who have issues with the Tranquileyes strap:
I also had a problem with the strap that holds the goggles to the head. The little adjuster pieces would dig into my ears at night. I replaced this strap with a piece of ¼” elastic. I routed it so there was one band below the ears and an upper band above the ears, like a surgical mask. Then you just tie a knot in the back.