Safe and Quality Material - Our thumb sucking stop is made of food grade silicone material which is reliable durable to use in month, non-toxic f baby. There is no metal part in the product, in case to avoid any unexpected harm to babies. The hardness of thumb guard is also soft enough to ensure the growth of baby teeth will not be affected, but break the habit of biting thumbs.Ergonomic design f Kid and Baby - This adjustable thumb sucking kit is designed f kids between 3-36 months old kids, a Natural and Comftable way to break the thumb sucking habit. The sucking thumb stop is designed with an adjustable wrist belt which can adopt wrist width from 1.95 inches to 1.5 inches. Tighten the wrist belt can also make sure the thumb cover not fall off too easily.Reusable and Durable - If you are wondering how to keep The thumb sucking stop clean sanitary f the next use, you can disinfecting the thumb protect in boiling water. Our products is made by quality silicone able to st under 180 which make sure there no harmful bacteria left on the product. The Thumb sucking stopper are suggested to be cleaned at least once a day.Effectively Breaking Bad habit - We suggest to use this finger sucking buster at least 4 weeks it can reach a maximum 95% successful rate. Our product is 24/7 necessary, but it will be better to take off at night to get the thumb sucking treatment kit clean f the next day use. It's imptant f baby to get off thumb sucking habit, since it will not only hurt the finger but also affect the growth of teeth.