A. Product - Material: Sponge, webbing - Sizes: XS, S, M, L - Parameters: XS is suitable for chest circumferences from 50 - 70 cm, S is suitable for chest circumferences from 70 - 85 cm, M is suitable for chest circumferences from 85 - 105 cm, L is suitable for chest circumferences from 95 - 125 cm - Color: Black - Quantity: 1 piece - Package content: 1 posture correction belt B. Correct posture - Incorrect postures may lead to problems such as neck or shoulder pain, back pain, and osteoporosis. This posture correction belt can help you keep your shoulders and spine upright in daily life, correct bad habits, and achieve visible results in a short time. C. Adjustable size - This posture correction belt made of soft materials can be freely adjusted by both men and women, so it can be adjusted to meet the needs of many people. D. Posture correction belt for pain relief - Do you sit in front of the computer for a long time or feel pain in your back and shoulders? Our posture correction belt can provide necessary support for your body, improving your overall spinal health and posture. E. Durable and wide - applicable - This posture correction belt can be used for indoor and outdoor activities, but not for sleeping. It is suitable for people who use the computer for a long time. F. Breathable design - It is designed with breathable fabric to reduce the pressure under the armpits. The simple design allows you to move freely as usual.