Best of both with memory foam and down alternative!  This is worth the price, it really makes a difference!  I have a good mattress that is about 5 years past its life expectancy, but a new mattress is not in the budget right now, so this is the perfect fix!  This topper makes me sleep better and I wake up more rested and less stiff, which is wonderful!  I recommend this topper for anyone that needs a boost to their mattress and anyone that has had back injuries, as it has made a significant difference in sleep quality.  The down alternative helps with air circulation keeping it just the right temperature, and the cover has deep pockets that easily went over my old pillow top deep mattress, and everything stays nicely in place.