1. Easy to use and adjustable 5 optional sizes suitable for women, men, and children. Before wearing the posture corrector, put on your clothes first, then select the correct size and adjust it to a comfortable fit for your body. 2. Lightweight and Breathable Features a sturdy ergonomic steel bar inside for full back support. The breathable, lightweight material helps manage heat and sweat. Ideal for various occasions like work, school, office, hiking, and more. 3. Improve Posture Unlike other posture supports, our upgraded corrector not only enhances back and neck posture but also helps tighten the stomach. If you sit all day at work or in the office with poor posture, you may experience fatigue and spine or back pain. Wear this corrector to train proper posture and boost overall spine health. 4. Back Pain Relief Bad posture can lead to neck or shoulder pain, backaches, osteoporosis, scoliosis, rounded shoulders, and stiffness. Wearing this fullback posture corrector twice daily for 15–30 minutes will help you achieve better posture!