Upright posture correction to create a healthy and upright posture. With the corrective posture corrector, you can train a healthy natural posture. With additional underarm padding, you can increase wearing comfort. Made of lightweight, late*-free neoprene, this shoulder strap can be worn comfortably and discreetly under clothing. It looks inconspicuous when worn comfortably on T-shirts, tights or shirts, but you can make full use of the straight collet, and you will feel it immediately as your attitude improves. Develop good habits in 3 weeks-15-20 minutes a day at the beginning is enoughWhether it is driving, at the desk or on the sofa at home. You will be surprised how effective the posture trainer isAfter a few days, increase the wearing time to a few hours based on your performance. -The posture trainer can help you maintain an upright and correct posture, and remind you to wear it while riding. Regular use will make you feel better and better, which will further improve your quality of life.Tips:-We do not recommend using it during e*ercise, eating or sleeping, so as not to affect blood flow. -Your back and shoulders will adjust slowly, and you will build muscle memory for the correct posture. -Postural support should only be used as a training tool to help you retrain to normal.Delivery: 1 * Posture TrainerS: Weight 20-45kg/chest 38-66cmM: Weight 45-80kg/chest circumference 66-110cmL: weight 80-150kg/ chest circumference 110-150cm About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.