The BruxGuard slimline version mouthpiece is designed to be inserted into the user's mouth before going to sleep and can be used on either the top or lower jaw. It has been made from a specially designed material that softens during the fitting process but once cooled down remains very durable. The BruxGuard should offer 3-6 months of use before needing to be replaced. The BruxGuard slimline version features a fitting handle and once fitting correctly can be removed. All orders come boxed include a retainer box and full fitting instructions.