Bought this for my son after he broke his ring finger (boxer's fracture) and ordered it from an orthopedic doctor's office hoping to save money. This was the only search result I got from what she had told me. We have him and he's not big enough and he can move his finger and even bend it, which you don't want to do with a broken bone. Returned it for another item that was less than half the price of this item and effectively immobilized the joint allowing its bones to heal. Search for "box rail" and you will get more results. It's just a Chinese made product that this company resells at a huge markup. It even came in one of those cheap zippered bags that everything else comes from China. There's no reason to pay a 300% markup.