100pcs Rocket Balloons with Two Free Air Pump. Giant Rocket Balloons to Whistle. Various Bright color of Rocket Balloons Refill Package include: 100 Rocket Balloons in a variety of bright colors plus two balloon pumps. Balloons inflate up to 40-Inch long. Let them go and theyll squeal, swirl and whistle through the sky. Notice: In order to use this product better, please pay attention to the following item: This product is a balloon for children to fly it, so the style is light and thin so that the effect is more obvious. Please pay attention to slow pressing when using the pump. In front of the inflatable balloon to pull a few times, can make the balloon expansion from the larger, develop the better shape and avoid the balloon explosion phenomenon. Rocket balloons can be re-used after every flight for hours of entertainment. Recommended for ages 5 years and up. Perfect toy for kids and nice party decorations.