Floating, color changing indicator discs that float in the milk and turn from purple to pink at 37'c to show when milk is too hot to drink. If the indicator is pink you know immediately that the milk is too hot to drink, when it starts to turn back to purple you know it's safe enough to drink.Easily washed and sterilized in the bottles.
The product is supplied as a 6 pack in a storage case along with a food tester and disc retriever which also gives a scald warning indication so not to burn your child.
