These paper balloons are called "kamifusen" in Japanese, traditional toys for children. They can be inflated through a small hole, gently bounced on the palm of the hand. Because it is made of paper, the balloons are light enough for indoor play yet heavy enough that keeping it aloft is a challenge. It is reusable and also great for decoration.
Inspired by spring, this two piece paper balloon pack will brighten up any space. The pink sakura pattern comes in a 6" balloon and 3.5" size, for play or decor.