it is now almost a week im wearing this posture corrector. The delivery took a little bit but into the time i paid for. It was with GLS courier. Something about the "corset"It is totally UNCOMFORTABLE, but it works like a CHARM. Yes it is not comfortable at all, however it keeps your shoulder in the correct position, and it works fine. The material seems to be almost good, sadly there are no double seams in order to make it stronger and more robust. And the adjustable ribbon length are made of plastic (that a little bit sad since in the pictures seems to be different).Generally speaking is a good tool to have in order to keep the shoulder in a correct position, however i would suggest to improve it a little bit. Lastly, since im using it tight enough on the shoulder, it is a little bit difficult when removing it. Indeed i tied a little cord on one side (u can see it from the pictures) in order to pull from there.