Hi swrstock,
Just to reinforce Everready073’s comments, they are open and transparent and will give you any information you need about the materials and components inside their mattresses.
A forum search on Buis (you can just click this) will also bring up more information and feedback about them.
They would be well worth a call and/or a visit IMO but if you aren’t comfortable driving quite that far then the better options and possibilities I’m aware of in the Fort Wayne/South Bend area are listed in post #4 here.
Phoenix