1. Which ancient civilization is known for using wool-filled mattresses?

2. What type of mattress was used in the early 19th century to treat patients with tuberculosis?

3. Which mattress material was first developed by NASA in the 1960s?

4. What was the primary benefit of using innerspring coils in mattresses during the 20th century?

5. Which innovative feature was introduced in mattresses during the 1980s to address pressure relief?

6. In which year was the modern memory foam mattress first introduced to the market?

7. Which mattress type was commonly used in early 20th-century hospitals to improve hygiene?

8. What material was originally used in the filling of early European mattresses?

9. Which type of mattress was popularized by IKEA in the 1990s?

10. What is the primary material used in a hybrid mattress?

11. What was the original purpose of using horsehair in mattress construction?

12. In which decade was the first air mattress patented?

13. What mattress feature is designed to reduce motion transfer?

14. Which type of mattress is often used in high-end luxury hotels?

15. Which material was used in the first modern waterbeds?