Depending on how it is used the mat can be called as a fall cushion, exercise mat, therapy table mat, bedside mat, camping mattress, etc. Regardless, it is a vinyl covered foamed mattress about 3 inch thick and up. They do absorb pressure well.
Brand: QualCare Multifunctional Mat
http://www.alimed.com/product_detail...FamilySKU=3773
....altho I'm sure there's plenty of vendors out there. It will probably cost less if you get it other than medical suppliers.