2023 New Lymphatic Drainage Device for Neck, 2PCS Portable Lymphatic Soothing Body Shaping Neck Instrument,Posture Correction Belt Relief Massage Device for Adult(Black+Black)

These work very well and are nice filters. I rate them a 3 because they are quite small. I used them in a cloth mask as an additional filter and it fit well in the masks for my 6 year old. Much too small for an adult face.

Like extra layer of protection

It does vibrate when I lean over..

This was a piece of junk and didn't work as they said

I like having these to put in my masks. Normally, I'm not in groups or close to people, but I like them on me, just in case. There are plenty of folks who don't bother to wear a mask. Don't get me started on them. They are of good quality, packaged in a snug cellophane wrapping.

I’m very happy with this mask filter sold by RTXSHOP. All 5 filter layers are accounted for. The filter isn’t too small like some other ones. The melt-blown work is good. Passes the running water test and candle test. Actually a little hard to breathe through the filter, but that means it’s doing its job and filtering the air you breathe!

The description does not have any to do with the product. This product is supposed to help you have a better posture. It has nothing to do with lymph node drainage

So, knowing that nothing like this really works for weight loss, I decided to try it anyway because it was so cheap. It arrived on time and in good packaging. When I opened the first of two packages I removed the holder and changed it for a few hours. I turned it on per the instructions and it powered up as per instructions. I then placed it on my back and wrapped the rubber ends around my neck. It started to vibrate, which I could feel and hear. It continued to vibrate until I stood straight up, then it stopped. As I began to walk it started to vibrate again and did so until I stopped and stood perfectly straight. It has nothing to do ultrasonic weight loss (as they advertise), it only indicates when you are not “perfectly” erect. All it does is go buzz, buzz, buzz, buuuuzzzzzz, over and over and it counts the number of times it buzzes. 🙄. The ad shows that you just wear this and magically lose weight. The instructions (inside) make absolutely no mention of this magical weight loss. Save your money. Even to just correct posture, no one can stand that straight.