How does this posture corrector work mechanically, and is it meant to be worn all day?

This product functions through mechanical design rather than active ingredients. Two rigid stiffeners run along the back to create structure in the thoracic area, while the overall shape of the brace gently guides the shoulders backward. This physical guidance helps keep the chest open and the back straighter, offering a constant reminder to maintain an upright position. It is best viewed as a training aid to help retrain muscle memory, not as a device that holds the back permanently. For best results, wear it during periods of highest postural strain, such as long study sessions or work hours. Combine its use with conscious movement, stretching, and an ergonomic sitting setup to reinforce good habits. It is not intended to be worn while sleeping or over irritated skin.