Underworks Posture Perfect Band 3-pack

I find this product useless as it is too uncomfortable to wear, even for an hour. Purchased to help keep good posture at work, but I could not use at all.
Also why do you have to buy three?

This product is more of a "reminder" than a posture corrector. First, you need to wear a shirt of some kind WITH SLEEVES under it or it will chafe. If it isn't tight enough, it's worthless. If it is tight enough, sometimes it rides up in the back, and it's visible from behind. I also had to crimp the fasteners as they came undone.

I wear a size 6, and this one-size-fits-all band was too large for me. I will need to safety pin it to make it smaller.

I ordered this item because I wanted something to remind me to stand up straighter. It does that. However it is one size fits all, which isn't really true. It does have adjustable closures, but I have a very broad back. My complaint is that if not placed exactly right your hands get all tingly because it cuts off the circulation.

I have had rotator cuff surgery and my physical therapist recommended a posture back brace. This product does the job and keeps my shoulder from turning inward, but I wish it was more comfortable.