This Nuby RapidCool Formula Feeding Kit contains 2 RapidCools with digital thermometer lids, an insulated flask to store hot water, and 2 formula powder dispensers. RapidCool rapidly cools formula feeds to the perfect temperature, so you can make ready-to-serve baby bottles anytime, anywhere! With 2 RapidCools in this travel-friendly kit, youll always have one ready to go.Complying with the NHS guidelines for safe formula preparation, Nuby RapidCool cools formula feeds from boiling to the perfect temperature in as little as 2 minutes*, making it easy to prepare ready-to-serve baby bottles between 90ml (3oz) to 240ml (8oz). The digital display changes colour as the feed cools, then turns green once its ready!Fill your RapidCool with freshly boiled water using the measurement markers inside, add your pre-measured formula powder and mix well. To check your feeds temperature, turn the RapidCool upside-down for 5 - 10 seconds so the formula comes in contact with the thermometer inside the d