I have chemical sensitivity and got this mat as a sort of test to see if my body could handle MEMORY FOAM. I know there are different qualities of memory foam and this one seems to be of good quality. It doesn't smell and I have had no headaches from possible chemical outgassing. I am currently using it as a mattress topper because I wanted to see how that would work before I spent the money to buy a real sized topper. I used to wake up in the middle of the night in severe pain in my hips. This mat has stopped all that. It is so comfortable. I travel allot by car and I took the mat with me to Los Angeles recently and used it on the house's mattress for two weeks and it was great. I will use this mat for a car camping mat, traveling mat and exercise mat after I buy a real mattress topper. Love this memory foam. This is a quality mat. The stretch terry cloth is soft and durable and doesn't pill. The teal colored underside is very nice, as it adds to it's durability and for all you OCD'ers (like me) you have a clear indication of what side your body should be on and you can even point the side where the tie's are hooked in as your "feet" end and so your "head" end doesn't get feet on it. Definitely a quality density foam that cradles the body wonderfully.