I like a mattress topper on my mattress and prefer them to be the poly fiber fill type that is easily pulled off of the bed and laundered. The topper arrived shrink wrapped, is 4” thick and can be laundered. As per product instructions the topper was air fluffed, I then (as I usually do) laundered the topper straight out of the package. It laundered beautifully and fluffed to an actual height of 4”; it did take 2 hours to dry on a medium warm setting as it is generously filled.  It is well made and should work well for years to come. It fit the bed nicely. Per the add it will aid in keeping cool in the summer and warm in the winter. For this thick 4” pad, I think the price is fair and I would recommend this one if you are looking for a nice topper.