Set of 2, including soft and hard types. Description: For those troubled by misaligned teeth, protruding teeth, snoring, or teeth grinding, and for those who want mild orthodontic treatment! It fits gently on the teeth and gums, and can be easily removed by yourself. Material: Soft: Silicone Hard: Plastic Target: For those aged 12 and over Type: Transparent, soft + hard type *Individual differences may occur. Single items and sets of 2 of each type are also available. Thank you very much. Please also take a look at my profile. Instant purchase is available(^^) If you wish, we also offer anonymous shipping (Nekopos), which is faster than regular mail, for an additional 50 yen.