Good. They sell an 8mm one from a Korean brand. It looked the same, so I ordered it. If you're going to order an 8mm one, buy this one. It does have a slight smell, but I just cover it with a thin cloth and put a small odor remover underneath, and it's fine. I looked into the air pressure option and found that all three options are needed to achieve air pressure. Check the options carefully before buying. Otherwise, it only has heating and vibration. Without air pressure, it's not very useful... It doesn't vibrate much, so don't expect a massage effect. It makes some noise, but I don't mind. It's wired, not wireless. It's actually better than I thought. I was going to return it if it wasn't good, but my mom said it's better than she expected and will use it. I'm satisfied, so I bought another one for my sister. The delivery was fast, took 3 days.
