Adjustable strapSuitable for men and women (teenagers and adults), the bust is between 18-59 inches. Start using the corrective band for 20-30 minutes a day and gradually extend the use time to achieve good results;ComfortDesigned with high-quality breathable fabric to minimize the pressure on the armpits, you can move freely as usual.To ensure maximum comfort, we recommend that you wear a t-shirt or shirt before using the product;Form Correct Healthy Posture The posture corrector reminds you to keep your shoulders back and your spine straight to help relieve pain, improve posture, and boost confidence;Use AnytimePosture corrector can be used for indoor and outdoor activitiesIt is not recommended to use the product while you exercise, eat or sleepSuitable for those who spend a lot of time on the computer;UTOBEST Service If you are not satisfied with our posture corrector, Please contact customer service in time,we will send you a replacement or give you a full refund.