Hm. Interesting, I'll have to look into that. I did get satin pillow cases (which are super slick and slippery!) but the wrap is a whole 'nother level!
Goodness, that made me laugh so hard from rememberin : a dear (male) friend of mine tried his Dw's silk satin pillowcase, liked the feeling, bought all silk satin sheets for their bed AND a pair of silk satin PJ's for himself.
He actually slipped off of his bed and fell. Hard.
We still laugh about it years later. His wife was in tears (laughter) every time she got to tell that story!
(We're an easily entertained bunch it seems)