Children with developmental disabilities may have a tendency to bite due to their development and characteristics. They may gain a sense of security or relieve anxiety through biting, but 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 can be used 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 you can bite" will allow parents and children to spend time together with peace of mind, even when they are out and about☺︎ Size Length: 6 cm Width: 2 cm Thickness: 1 cm The cord is adjustable! This is one purple one. Blue Yellow-green sold out Red sold out Yellow sold out Orange Last 1 Purple Pink Pink, Purple: 599 yen Other colors: 649 yen Please comment before purchasing if you would like to change the color or quantity. Changes are not possible after purchase under any circumstances. 50 yen off from the second item ※ ◎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. Same-day shipping Anonymous shipping +150 Standard mail shipping There is a thickness limit, so Waterproof + envelope packaging without cushioning material No price reduction