Tommee Tippee Gro Egg Peace of mind at a glance. The innovative Groegg changes colour with the temperature of a room. A yellow glow means a safer temperature for children to sleep in. The Groegg also acts as a nightlight. The colours of the Groegg match the tog labelling on the Tommee Tippee Sleepwear range. This helps make choosing what baby should wear at bedtime for a comfortable night’s sleep much easier for parents, helping everyone to get a better night’s sleep. Our Tommee Tippee Groegg Digital Room Thermometer changes colour to indicate the temperature of the room. Groegg is now USB rechargeable. No need for batteries. Digital Room Thermometer with permanent lit LED readout Provides a soft nightlight glow to keep your baby calm during the night Use with Tommee Tippee Sleepwear range