Advantages of the positioning harness 1. Enhance stability and focus on posture correction. 2. Alleviate discomfort in daily life. 3. Extremely convenient to put on and take off. 4. Suitable for daily life and work scenarios. Using this posture correction harness can help shape a better posture and is suitable for both men and women. The harness is made of lightweight materials and is equipped with two smart Velcro straps, which can be easily adjusted as needed. This harness improves posture by preventing shoulder forward slumping, relieves back pressure, and helps reduce tension and discomfort. The standing harness is suitable for short - term use, such as when sitting at a desk, walking, or cooking. Recommended sizes (chest circumference) 1. M: 87 - 106 cm 2. L: 107 - 126 cm 3. XL: 127 - 145 cm M - style back cushion corrector Advantages of the fixed harness 1. Enhance stability and focus on posture correction. 2. Alleviate discomfort in daily life. 3. Extremely convenient to put on and take off. 4. Suitable for daily life and work scenarios. Using this posture correction harness can help shape a better posture and is suitable for both men and women. The harness is made of lightweight materials and is equipped with two smart Velcro straps, which can be easily adjusted as needed. This harness improves posture by preventing shoulder forward slumping, relieves back pressure, and helps reduce tension and discomfort. The standing harness is suitable for short - term use, such as when sitting at a desk, walking, or cooking.