This four-inch mattress topper is exactly what's advertised at about half what they charge on other websites. It is extremely comfortable and of good quality (very heavy). The only negative I've experienced is the fact that on the Queen size topper (the one I purchased), it is not flush with a Queen size mattress. There is about an inch of mattress all the way around the topper, which isn't a huge deal when you have sheets on, but as a tall person I miss that extra inch! Otherwise, excellent product.