Ordered it on blind, but it is REALY GOOD! Being 52, I own a few wrinkles, severe teeth grinding for years, this is magical appliance, which is comfy, does not involve seeing your dentist and saves you money too. Takes a few days getting used to, like anything new. So far I am pleased, as miraculously straightens teeth, minimazes wrinkles and does not allow ANY grinding. Thank you!