
I have a machine that uses these spacers and I am very happy with them. Unfortunately, the pads don't last long. I use them properly but they don't seem to last more than 3 uses. I need to be "creative" and use pads more than 3 times. I used the device every day at least 2 or 3 times a day, so one pair of parents is enough for me for a day. I'm on a tight budget so I have to be very careful and when I saw someone say they really liked pads I was very hopeful but for some reason they don't work for me. I have an old device and their pads work. really cool! Unfortunately, they are not interchangeable with this new device. My old block doesn't have enough strength for my spinal injuries I sustained in a car accident in August. It seems the pads work for some people and for others which is why I didn't give it under three stars. I don't think that was fair as other people seem to be very happy with pads.

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