The Grobag Egg is a color changing digital room thermometer. This clever innovation lets you know if your baby's room is too hot, too cold or just right by changing colors. The egg acts as an aid to maintaining a safe sleep environment for your baby. In addition to knowing the actual temperature of the room, I love the color aspect of the egg. I can just peek in my son's room and if the egg is yellow (the recommended temperature), I can just leave without disturbing him. If it's red or blue, I know to take action. The egg provides a nice, soft "nightlight" glow which actually feels pretty calming. It doesn't seem to bother my son at all. And as an added bonus, the egg itself is cute! To purchase, you can go either to Keen Distribution or to Giggle . If you're the type to stress out like me, I would highly recommend the Grobag Egg!