Kyosei Belt (Posture Correction Belt) From the official website: Feature 1: 【Ultra-lightweight Ex.supporter】 Based on customer feedback, this posture supporter is 30% lighter than the previous model and features elastic belts for greater freedom of movement. Feature 2: 【Correcting Posture Without Strain】 While a heavy posture corrector with metal plates might be ideal for immediate correction, posture correction requires long-term use over several months. Ex.supporter was developed to integrate into daily life and provide long-term support. Feature 3: 【Excellent Breathability and Durability!】 Designed to minimize the burden of wearing, allowing for smooth integration into daily life. The shoulder straps are designed to distribute pressure as much as possible, and the mesh structure helps prevent stuffiness. 【Regarding Size】 Unisex and free size, suitable for anyone.