E&C pacifier / pacifier

Most parents try their best to avoid the hot milk scald their babies in our daily life.Now, Idesign this pacifier ,which keeps a suitable warm temperature. It uses the principle of heat expansion and cold contraction. When the temperature is higher than 40℃, the shim in the pacifier will expand and block up the hold in the shim. While if the temperature is lower than 40℃, the shim will contract. Then there appears a little hold throug which the baby can drink the milk.