Only the wind drives them. Whether it's an airplane, tricycle, or surf bot, these 6 robot models are just waiting for the next gust of wind to get them going. The wind bots are built and rebuilt from over 100 individual parts. Endless fun for all construction fans. But even on calm days, the bots don't stop. With the handy, hand-operated wind machine, they can drive, walk, and crawl around indoors with ease. Meanwhile, the illustrated step-by-step instructions explain how emission-free drives work and where wind power is already used in everyday life. This KOSMOS experiment kit for children aged 8 to 12 makes the element of air the highlight. It's about to get windy. The 6 different models are powered solely by wind and zoom through the children's room. Even on windless days, this is not a problem, as the practical hand-operated wind machine comes into play. No matter how the wind bots drive, walk, or crawl, they are all assembled from over 100 individual parts and can be rebuilt again and again. Whether it's an airplane, quad runner, drill truck, or one of the other robots, children learn about wind as an example of renewable energy, as the bots operate completely without batteries. A construction fun from KOSMOS for children between 8 and 12 years old, who are just waiting to finally catch some wind. Contents: Parts for assembling the models, parts for the hand fan, instructions. Additionally required: Side cutters or nail pliers, alternatively scissors and a nail file.