RADRANNE Radiance Shoulder-Rolling Shaper Posture Supporter Hunchback Belt, Posture Belt, Black I am selling this because the size didn't fit me. I have worn it only once. All-reset for shoulder rolling, hunchback, and smartphone neck! Tightens the shoulder blades and maintains a beautiful, upright posture. The shoulder-rolling shaper creates the coveted, defined collarbone and straight shoulder silhouette. [Adjustable Cross-Style Belt for Shoulder-Rolling Shape and Slender Figure] The cross-style belt, uniquely designed to cover the back and front, tightens the shoulder blades. It opens the chest and corrects shoulder rolling to the proper position, leading to a slender and narrow shoulder width. [High-Side Design for a Slim Silhouette by Smoothing Armpit Fat] The approximately 12cm side bones neatly suppress armpit fat flowing into the upper arms, correcting the appearance of upper body slimming. The sides are sleek, and the bust has a full, beautiful silhouette.