My parents recently spent a night at a hotel that had Sleep Number beds. They kind of liked the bed, so my dad went online to do a little research.
He learned that besides the mattresses, they also sell a Sleep Number Bed Modular Base. There was a link to "Learn More".
One of the things he learned is that the Modular Base is:
"Made in the USA of durable, long-lasting material"
First of all, isn't "long lasting" basically the definition of "durable"?
Second, "material"? Really? It's made of "material"?
If they went through to trouble to be that vague, you have to feel that there is something they don't want you to know.