DIY ASSEMBLE CAR: It is a DIY Solar Power forward car open a spare parts package handmade you can make a solar car as the picture shown without the battery. IMPROVE ABILITY: It can improve children's abilities of creativity and practice. It also train the patient of children when they assemble the car. Manufacturered by SEALEN. GIFT IDEA: Perfect Christmasgift for Kids students which is great for training their hand-on skills and creativity. WARM NOTE: For better results better not test indoors or under Lamp. MATERIAL: ABS.