I am very impressed with the delivery. I ordered it Friday night, late and had it Monday morning by 9:30am! We purchased this product as a substitute for purchasing a new mattress, we are very surprised by the outcome of this topper. It is extremely comfortable and fits to the mattress easily with the straps to prevent movement. We are having a better sleep quality and are having no more back pain complaints. I would advise that you will need to go up in a sheet size though if you do want to use a bed sheet.