Safe Quality Material - Our thumb sucking stopper is made of food-grade silicone material, which is reliable and durable for long-term use. It is 100% non-toxic and safe for babies. There are no metal parts included, helping to prevent any unexpected harm. The thumb guard is designed with a soft hardness to ensure it does not interfere with the natural development of baby teeth while effectively discouraging thumb sucking. Ergonomic Design for Kids and Babies - This adjustable thumb sucking kit is suitable for children aged 3 to 36 months. It provides a natural and comfortable solution to help break the thumb sucking habit. The product features an adjustable wrist strap that fits wrist circumferences from 1.5 to 1.95 inches. The secure fit helps prevent the thumb cover from coming off easily. Reusable and Durable - To keep the thumb sucking stopper clean and hygienic, it can be sterilized in boiling water. Made from high-quality silicone, the product can withstand high temperatures, ensuring no harmful bacteria remain. It is recommended to clean the thumb stopper at least once daily. Effectively Breaks the Habit - For best results, use the thumb sucking stopper consistently for at least 4 weeks, which may lead to a high success rate in habit correction. While the product can be used throughout the day, it is advisable to remove it during sleep to allow for cleaning and to maintain hygiene for the next day’s use. Addressing thumb sucking early is important, as prolonged use may affect finger skin and dental development.