This posture supporter, size S, is designed to be comfortable and easy to wear, making it easy for busy people to use at home. Achieve proper posture with just 2 hours of "while-doing" correction per day. Straight Doctor's posture supporter was developed for those struggling with years of ingrained bad posture. [Original reverse Y-shaped design & pads to prevent underarm pain] The reverse Y-shaped design in the underarm area prevents pain caused by digging in. Attaching the included removable pads to areas where the belt presses firmly can also reduce digging in. [Shape-retaining design for easy on and off] A stopper prevents the belt from slipping out, maintaining the posture correction shape. It's as easy as putting on a backpack, so you can easily put it on and take it off by yourself. [High holding power to open the chest] Straight Doctor's posture supporter also offers superior hold. The secret lies in the "backbone." It fits snugly over the entire back, powerfully supporting the back muscles into the correct posture. The holding power is different from shoulder-strap type supporters. You can adjust the correction force to your liking with the adjustment belt.