Style BX MTG [Genuine Manufacturer's Product] Belt (BX Fit, M)

Just wear it to achieve beautiful, core-aligned posture. Comfortable design for long periods of time: The comfortable, non-restrictive design with fabric that fits snugly helps you develop a natural posture, even when worn for long periods of time. The minimal thickness means it's easy to wear under clothes without feeling unnoticeable, making it easy to continue wearing. Triple link structure: Opens the chest, which is key to good posture, and naturally aligns the S-shape of the spine. Prevents armpit tightness: The underarm straps shift forward to prevent excessive tightness.