Blkpostzon Posture Corrector for Women and Men-Adjustable Back Strap-Shoulder and Back Brace Posture Corrector for Upper Back Support and Relief Back,Neck and Shoulder Pain (Universal)

It's uncomfortable under my arm pits. It doesn't sit on your back like shown in the picture. I stopped using it after a couple of days.

2 1/2 Starsit's uncomfortable to wearhard to take off alonehurts alot under the arm pits.Been wearing it not really sure if i see any improvements.

If this product is adjustable, I have not figured it out. It is very comfortable but VERY difficult to take off. (remove) Instructions would be very helpful.