Sleep Like Royalty! 👑 Experience the perfect blend of soft foam and sturdy steel innersprings for ultimate support. Supports up to 250 lbs for twin size and 500 lbs for larger sizes, accommodating diverse sleepers. Unbox and unwind—this mattress expands to its full glory in just 72 hours! Enjoy a 0.5" high-density foam, 1" ViscoLatex foam, and a robust 6" coil base for tailored comfort. Sleep easy with a 10-year limited warranty, ensuring your investment is protected. CertiPUR-US certified Mattress-in-a-box 8" height The Zinus 8 Inch Foam and Spring Mattress combines durable foam layers with steel innersprings for a supportive yet soft sleeping experience. CertiPUR-US certified for quality, this mattress arrives conveniently compressed in a box, making setup a breeze. With a 10-year warranty and impressive weight capacity, it's designed for comfort and longevity.