Have Used on Multiple Trips to Disney World
We lost a Magic Band on Aerosmith Rockin Roller Coaster a few years ago.  Purchased band belts and actually had them shipped to us at Disney.  We have used them since and have had no issues.  They were more than twice the price they are now.  However, we have not had to repurchase.  They have lasted over the course of an additional four or five trips.
Rating: 5 stars