This mattress topper is PERFECT.  I put it on a fairly new mattress that was just too firm, and this made the bed so comfortable I slept through the night -- something I haven't done in years.  Easy to unroll and let the mattress topper rest flat for 48 hours.  Fits nicely under mattress cover and contour sheet.  Lavender scent is not overpowering at all.  I'm buying more for other beds, as soon as it comes back in stock.  Have recommended this to others seeking similar solutions to too-firm mattresses.