No need to spend big bucks on replacing your mattress....just buy a Slumber Solutions Mattress Topper! This 4" King/ Queen' Cal King size with memory foam provides extra wide and long coverage with cushy, sink-in, comfortable beyond belief slumber! There is a waterproof cover that is also included which is nice if your dog likes to share the luxury with you.....and drools alot to express his approval. I highly recommend this mattress topper to anyone who likes a pleasurable, gratifying night's sleep without bumps and lumps. This product is supportive and yet flexible, allowing the user to spend more time in "dream" land....a healthy way to start the new year!