12 Inch King Mattress in a Box: Hybrid Medium Plush King Size Mattress for Pain
Unbox, unroll, and allow 24-72 hours to fully expand. This mattress in a box king works with most platform, slatted, box spring, and adjustable bases, and is backed by a 365-night trial. CERTIFIED SAFE KING MATTRESS: The mattress features a natural cover that is fiberglass-free and skin-friendly.