Brand new, unused. This is a posture supporter developed and supervised by Tadashi Kaneko. It's a sleeveless design supporter made with stretch material. It supports posture using the KANeko STRETCH method. The latest model of the popular posture supporter, with over 580,000 units sold in the series! S Tasuki Light eX focuses on the traditional Japanese beauty posture item, Tasuki-gake (a sash worn across the chest and back), and is designed as an inner garment that leads to a beautiful posture while reducing the burden on the neck just by wearing it. From Tadashi Kaneko's perspective, who believes that "poor posture is the cause of all ailments!", this product focuses on the stooped posture and smartphone neck, which are common problems for many modern people. It addresses the poor posture of leaning forward, such as when using mobile phones and PCs, watching TV, or doing housework, where the head and face unconsciously lean forward. The key to beautiful posture is the "first thoracic vertebra." The first thoracic vertebra is where five bones and four joints work together. Focusing on this human structure, pressure is applied near the first thoracic vertebra, and the surrounding muscles are stretched, naturally leading to a beautiful posture! After wearing it, clasp your hands behind your head, take three deep breaths, and slowly lower your hands. This stretches the muscles of posture and breathing, and aligns you into a beautiful S-shaped posture (an S-curve that flows from the shoulders to the back and hip line). Just by wearing it, you are naturally guided to a good posture. - Model Name: S Tasuki Light eX - Color: Light Gray - Material: Stretch material - Design: Sleeveless design - Features: KANeko STRETCH method Thank you for viewing.