This little device is small and lightweight, and it allows you to observe two important facts about the silkworm. Firstly, its feeding and breeding cycle lasts approximately one hour. During this time you can take pictures of both the adults and larvae in action. Secondly, and more importantly, the transparent housing allows you to see exactly what type of food item the silkworms are feeding on at any given moment. This way you know what kind of effects your observations are having on the outcome.