Our mattress is not in the best shape and my husband and I was suffering from chronic pain in our joints (shoulders, hips, etc.) This Serta 4-inch Restoration Memory Foam Mattress Topper is a life saver. After the first use we woke up without the aches and pains we typically had each morning. We decided to use the egg crate side to sleep on and it is soft and snuggly and gives us just the right amount of support. This is one of the best purchases I ever made.