1. Elbow splint support band size: The medium size is suitable for people with an arm circumference of less than 12 inches. It is a universal model suitable for children, women, and thin men, providing support for your arm. 2. Two hard metal strips allow a certain degree of movement while preventing the elbow from bending. 3. Adjust the Velcro strap to secure the elbow stabilizer. It generally won't slip off, and you can wear it for a long time, even during nighttime sleep. 4. It is designed to help solve elbow problems such as elbow fractures, cubital tunnel syndrome, nerve problems, etc., relieve pain, and prevent elbow bending after surgery. 5. It can be used on both the left and right arms - the Velcro strap can be adjusted to achieve a relatively ideal compression effect.