It's not as thick as I was hoping, but was prepared for that after reading reviews and for the price decided I'd take what I could get for the super low price!  It comes out of box at barely a half inch thick, but does expand over 48 hours of laying out flat! It's just under 2 "  but still helped make our cabin bed more comfortable! Since it's just a weekend bed it's been a worthwhile purchase for us, but if you're looking for a significantly softer topper you may want to pay more for more thickness.