Improve Posture: Unlike other postural orthoses, our improved posture correctors not only improve your back and neck posture, but also tighten your waist. If you sit at work or in the office all day, you will feel tired and sore in your spine and back. Wear this posture corrector now to train your posture and improve your overall spinal health. Relieve Back Pain: Poor posture can lead to neck or shoulder pain, back pain, osteoporosis, scoliosis and bent shoulders, and poor muscle tone. If you wear this back posture corrector twice a day for 15 to 30 minutes, you will achieve good posture. LIGHT AND BREATHABLE: It has 2 breathable shoulder straps for a light and comfortable fit. Breathable, lightweight material helps your back when it's hot and sweaty. It is suitable for various occasions such as work, school, running, climbing and so on. A posture trainer is a piece of equipment that allows you to improve your body alignment. advantage: Train your back with proper form. Prevent neck pain back shoulders. Reduce mental and physical fatigue and stress. Improve physical health and increase your productivity. Fully adjustable, comfortable and easy to wear. Suitable for men, women and children. Perfect for use in the office, home and anywhere you like. Available in the following sizes: XL (for waist: 105-130cm). Please refer to the size information to choose the size that is right for you. If your waist fits both sizes, consider the smaller one. How to use it: 1. Twice a day, 30 minutes each time. 2. Gradually increase each workout by 15-30 minutes until your body adjusts to the correct form. 3. The usage time within 12 hours per day shall not exceed 3 hours. (If you have pain or are tired of wearing your posture corrector, take it off and put it back on the next day or two.) wash this product? Hand wash in cold water with soap and air dry. A brush may be required, not machine washable. The package includes: 1 x Back Stabilizer. 1 x Operating Instructions (English not guaranteed).