- Is the BRS900 extra firm good for side sleepers?
- Usually not. Side sleepers need cushioning at the shoulder and hip, and most find this build too hard. Back and stomach sleepers are the better fit.
- Does it need a box spring?
- No. It works on a platform bed, slatted frame or adjustable base. A box spring adds height but is not required.
- How does it compare with an all-foam mattress?
- The pocket coils add bounce, airflow and edge structure that foam lacks, but they transfer more motion. All-foam beds feel softer and isolate movement better.
- Is $471.12 a good price?
- It is the lowest new price among the three stores listing it as of November 7, 2026, and sits at the low end of its recent range.
- How long does it take to break in?
- Expect a few weeks. The foam softens first; the coils stay firm, so the bed remains on the hard side.
- Where is the Simmons BRS900 Mattress 12 Inch Queen Extra Firm cheapest?
- At JCPenney, for $471.12, as of our latest check.
- Where can I buy the Simmons BRS900 Mattress 12 Inch Queen Extra Firm?
- 4 stores we checked sell it, including JCPenney, The Home Depot, Sam's Club, Mattress Firm.