I have only had this set for 14 days, but I would like to say that my back pain/tension has already improved. The sciatic nerve was tormenting me a lot, the pain has been blown away. Of course you have to get used to the stinging, but I put on a light T-shirt and thinner Capri pants and then lay down on the mat. The only thing I still have to get used to is the neck cushion, but I think that will work soon. The price is right, good quality. Thank you and best regards