Heating is a scientifically approved method that increases milk output and comfort. We have attentively designed the embedded heating components with a smart temperature sensor that checks every 3 seconds to maintain optimal heat. It offers 7 heating levels (95-105°F), a smart timer ranging from 5 to 15 minutes to prevent low-temperature burns, and is made of BPA-free silicone. The heating flange has been tested with over 56 hours of continuous boiling and 1,000 flex tests.