These are really easy to set and its really nice that it comes with a case and extra molds just in case you mess up or for use at a later date. They come with two sizes and one being a small size and the other an average adult size. Once they are boiled they are very soft and very moldable and they give you enough time to mold around your teeth before they start to set. They are very comfortable to wear at night and they don't hurt my mouth or gums. I'm very happy with the out come.
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