The worm is very sweet, like it better than the picture in kind. Too bad that it's not such a cute stocking cap has like in the pictures, but that's not so important. We bought the firefly for our 15 months old daughter, as falling asleep at the time not so easy for them. As it gets to Nicholas only in a few days, we can give no opinion on the benefits. But grudge! There have written before us many people that their worm is difficult to bring to light. A little tip because we Easterners are indeed open inventive :) Velcro, pull all the electrical part of the figure and simply very carefully prize up the metal contacts and already the little lights at the tiniest touch. Have we made in our Glühwurm and now the lights even when you put it on a firm surface.