From Fridababy, this rectal thermometer features: Recommended use: for  0+ Months 1 Rectal Thermometer + 1 Carry Case Delivers a 10-second quick read  Parent-proof rectal insertion stopper to keep you from inserting too far large display with backlight makes nighttime temp checks easie Safe flexible tip and stopper make it parent-proof  AAP recommends that for at least the first year of baby's life (though up to three is best), temp checks should only be done rectally. Plus, the parent-proof stopper with an LED light makes tush temp checks worry-free. Memory stores up to 10 previous readings BPA-Free and latex-free water-resistant  Imported.