[END THE STRUGGLE WITH UNCOMFORTABLE SLEEPER SOFAS] - This mattress is designed specifically to replace or upgrade the thin, unsupportive mattress that comes with most pull-out sofas. The 4-inch memory foam layer provides real mattress comfort and support, transforming your sofa bed into a sleeping space your guests will love [TWO LAYERS OF COMFORT, EASY TO STORE] - The unique dual-layer design combines a soft, pressure-relieving top layer with a supportive base foam. At 4 inches thick, it’s thick enough for comfort yet slim enough to fold and tuck neatly into your sofa bed frame—no need to remove it when closing the bed [PERFECT FIT FOR QUEEN SLEEPER SOFAS (AND BEYOND)] - Measuring a true 72" x 60", it’s engineered to fit standard queen-size sleeper sofas. Also works seamlessly with trundle beds, hide-a-beds, RVs, campers, and futons—making it the versatile spare mattress solution you’ve been looking for [WHY IT BEATS AN AIR MATTRESS & STANDARD PADS] - Forget noisy pumps and middle-of-the-night deflation. Compared to air mattresses and thin pads, our memory foam provides body-contouring pressure relief and consistent support all night long. CertiPUR-US certified for durability, safety, and low odor [BUY WITH CONFIDENCE—PLUS AN IMPORTANT FIT TIP] - Shop risk-free thanks to our straightforward return policy. Pro tip: Before ordering, measure the interior storage space of your sofa bed when closed. Ensure you have at least 4.5 inches of clearance for smooth folding and storage. Not recommended for ultra-slim mechanisms requiring a mattress under 3 inches Ferlizer 4" [Queen] Sofa Bed Mattress Replacement, Memory Foam Sofa Mattress Topper with Ultra Soft Cover, CertiPUR-US Certified, Grey