This Sterling Silver ADJUSTABLE Swan Splint Ring is used for hyperextension on the hand joints. It can be used in the DIP, PIP and IP joint. You'll be able to bend your finger while wearing this ring splint. We offer resizes at no cost if needed, if you have questions regarding sizing or correct style of splint for you please reach out to us. SIZING: We use standard US ring size to make our splints, we'll need the size ON TOP and the size UNDER your joint, please measure the circumference of your finger in both of the places mentioned. We DON'T use sizes taken with an angled sizer, please send us a message if you have sizing questions or need guidance. Our goal is your comfort and that you are happy with your purchase.