When you inflate aluminum balloons with hydrogen or helium, they float gently as if they are walking. You can easily inflate the balloons with a handheld air pump. Made of high-quality aluminum material. Each balloon is quite large, making this a great value set. Perfect for birthday parties, various events, and children's gifts. ☆ Balloon strings are not included. ※ For hygiene reasons, we do not inspect the balloons after inflating them. If there is a small hole, please use transparent tape to repair it. ☆ Due to being imported from overseas: There may be some scratches, marks, or stains. Please refrain from purchasing if you are looking for a perfect product. ☆ We do not accept cancellations or returns due to customer reasons such as a difference in image or size.