Adjustable Back Posture Corrector by EcoGear FX - A Light Weight Posture Brace for Men and Women Ideal for Shoulder Support, Upper Back & Neck Pain Relief

This item came with instructions that don't even match how the product was made and no help whatsoever

It basically is a strap you put on and it hurts under the arm. exactly in the arm pits. I think there is no thought in design and it is really uncomfortable to wear