This Serta topper is a great value. I previously owned a no-name 2" topper with 2.5 pound density. This Serta from Overstock is 3" with 4 pound density, and the difference is wonderful! The 4 pounds offers firmer support, and with 3 inches it offers more of that support. I can tell the difference. I sleep better and wake up with no aches or pains. I have also priced these on the internet, and overstock has the best price on this product by far! Don't pass this up!