light and sturdy, provide some upper back support
First product of this kind, "posture corrector". I doubt there's any effect of actually correcting. The product itself seems to be fine. It's sturdy enough to pull the shoulders backward. It's also quite light so you feel the pulling force but not the weight. Then again the product solely focus on the shoulder/chest, I feel it would be more helpful to have some lower back support for me personally.
Rating: 4 stars