On the first day I've actually sat three times with pauses on the support and had the rest of the day and then really bad backache. No stress or pain as if someone massaged me inappropriately, rather a little bit as if I had been beaten. I even suffered small bruises, could lean on for a whole day and the next day I have nowhere seen the edition warily from a distance.
But currently I'm back on it and but now wear a sweater over the shirt and have put a blanket over the support. Now it is more comfortable.
The power intensity is advantageous for the buttocks area, and I have problems and the massage does really well. The neck is really almost non-existent, because touching the 2 massage heads there my neck / neck only slightly. I am 1,62m tall, which is within the recommended size, but also even if I put a pillow, the area between the heads is somehow too big and simply can not get ran where actually my muscles are. It touches a rather there only gently.
Due to the "brutality" of the edition - the one like genuine or necessary must have - a star deduction. Due to the in contrast, little pronounced neck functionality of the second trigger. The edition has quite a handsome price and for that I would have expected more comfort.