text: I gave the chair 3 Stars because of the comfort level. The chair is very low to the ground so if you're a person with knee problems, it might be difficult getting up. Also, the backrest is not comfortable on my neck and upper shoulders because it tilts my head forward when I lean back. There is also a hard pole in the back if the seat that can be uncomfortable as well. I have to use a cushion! The vibration (not massage) is okay and it does heat up.