Excellent Recyclable MaterialBPA free, everyone including children, babies and infants can trust and use with confidence. In addition, the head of the ear muff made of soft material has the elasticity to protect the child& 39;s soft eardrum. Reliable and AccurateEartips will protect the eardrum thermometer from scratches and other impurities that may affect the readings of temperature. Plus, less lens contact extends the life of the ear thermometer. HYGIENIC SafetyRefill caps reduce the risk of germ transfer and contamination. To avoid cross-contamination between different users, the ear thermometer probe covers should be replaced after each use.