Children with developmental disabilities may have a tendency to bite due to their development and characteristics. Biting can provide a sense of security and relieve anxiety through the stimulation it provides. However, if they put things they shouldn't bite, such as clothing, in their mouths, stopping the behavior can lead to stress and tantrums. This item is for use in such situations⭐︎ (Of course, adults can also use it.) It's a necklace, so you can wear it all the time♪ I think having "something okay to bite" will allow parents and children to spend time together with peace of mind, even when they're out and about☺︎ Size Length: 6 cm Width: 2 cm Thickness: 1 cm The cord is adjustable! This is one blue one. Available colors: Blue Light Green Red Yellow Orange Purple Pink Blue, Pink, Purple: 599 yen Other colors: 649 yen Please comment before purchasing if you want to change the color or quantity. Changes are not possible after purchase under any circumstances. 50 yen off for the second item onwards. ※ ◎Since it is made overseas, there may be small scratches compared to those made in Japan. ◎Although it is new and unused, it has been opened once for inspection. Ships the same day Anonymous shipping +150 yen Standard mail shipping Due to thickness restrictions, Waterproof packaging + envelope without cushioning material No price reduction