Thank you for viewing! m(_ _)m This item has been opened for confirmation but is unused. Instant purchase welcome ✨️ Size: S size Supports rounded shoulders with "Ring Out" structure: A unique design that gently opens shoulders that are closed forward towards the back, guiding them to the correct position. Supports natural "beautiful posture": It supports a beautiful and natural posture without excessive tightening, allowing for comfortable wear every day. Breathable material: Uses a lot of mesh material, making it a structure that is not stuffy even if you sweat, allowing you to wear it comfortably all day long. Thin design that is not noticeable under outerwear: It is not noticeable even when worn under clothes, and can be used anywhere, such as commuting, the office, or while doing housework. For those who are concerned about: Rounded shoulders and hunching due to computer and smartphone use. Being told that your shoulders are forward and your posture is bad. Tending to hunch over during telework or desk work. Wanting to regain a beautiful S-line. Seeking authentic shoulder blade support. 30-22