I wasn’t so sure about this mattress topper when unpacking as it seemed extremely flimsy and not as durable as I was expecting, that said- after allowing it to fully expand (they recommend overnight or 24 hours) it is legitimately 2.5” inches and makes all the difference in the world when adding on top of a pull-out couch for overnight guests. This made our guest bed so comfortable, we almost prefer it to our own bed! Shipping speed was also excellent, arrived in around 3-4 days after purchasing. Overall, I feel this was a great purchase and would recommend this item to others.