This new gel memory foam hybrid spring mattress in a box is available in Twin, Full, Queen, and King sizes, making it a practical option for different bedroom setups. The hybrid design combines gel memory foam with spring support, and the boxed format may be convenient for delivery and setup. Free shipping is included, which can help when comparing overall purchase cost. If you are shopping for a mattress for a main bedroom, guest room, or an upgrade in a specific size, this listing offers multiple choices to consider. Since size preference and bed frame compatibility matter, be sure to choose the right option before ordering. Check the listing for full details. 12"14" Gel Memory Foam Hybrid Spring Mattress in a Box Twin Full Queen King Size. Color: Gray, Condition: New. Listed at 145.72 USD. Just unbox, unroll, and let it expand. Enjoy personalized support from our advanced 7‑zone mattress. This mattress achieves the perfect balance of comfort and support. Available in Twin, Full, Queen, and King sizes.Wake up refreshed.