Mt posture changed after my 3 month recovery from elbow surgery. I sat in my recliner, on my phone in a hunched-over position day and night. Didn't notice the "slump" until I went back to work and saw my reflection in the bathroom mirror. Slumping is more comfy than standing up straight but makes me look like the old lady that I am. I just received my Fit Geno Posture Corrector. I put it on per instructions. It fits good and does correct my posture, but I can tell, after 5 minutes, it's going to cause great irritation in the armpits. I'll give it a chance but may have to return. I did some research and found some easy exercises to correct this particular problem. Will definitely try them, if my freak'n arthritis let's me.