1、Principle: Show flying function and dynamics of butterfly toy, relying on the torsion of the rubber band to generate an upward force, and the toy will fall off after the torsion of rubber band is released. 2、Lifelike Butterfly Pattern: Bright and delicate color, overall looks exquisite and beautiful, attract attention of people, suitable for 7 to 14 years old juvenile. 3、Multiple Use: Flying butterfly toy can be used as bookmarks, decorations for greeting cards, or perfect gift for girls and boys. You can put it in a book or greeting card to surprise a friend. 4、Easy To Use: Hold the tail of the butterfly in your left hand and do not move, rotate the head of the butterfly in your right hand about 40 times, and then release your hands at the same time, then you can see the butterfly fly out. 5、Plastic And Paper: 10pcs of wind up butterfly toy are available, meet your different use needs. Adopts plastic and paper material, eco friendly, wear resistant and durable. 10 x Instruction Card10 x Butterfly Toy Item Type: Flying Butterfly ToyMaterial: Plastic, PaperWeight: 76g / 2.7oz(approx.)Applicable Age: Juvenile (7-14 years old)Product Size: Approx. 11.5 x 11.2cm / 4.5 x 4.4in