Built for sleepers who need real support and won't compromise on it. The Explorer Firm 4000 pairs a durable rayon-blend cover with SpineCare fabric-wrapped steel coils, so you get firm, stable support and an edge that holds up under years of sitting and sleeping.
What sets it apart:
- Durable rayon-blend cover — Soft woven fabric known for its stretch and recovery, built to last.
- Breathe Easy construction — Chemical-free, plant-based FR rayon fire barrier. No fiberglass, ever.
- Pressure-relieving quilt — Resilient quilting materials cushion pressure points without sacrificing firmness.
- SpineCare fabric-wrapped coils — Steel edge support extends the usable sleep surface and resists sagging over time.
The details:
- Firmness: Extra Firm
- Mattress Height: 12"
- CertiPUR-US certified — no harmful off-gassing
- Made in the USA
- 10-year limited warranty