Seal Japanese Paper Balloon by Petra BoaseSeal Japanese paper balloon by Petra Boase. Each balloon comes flat, to use simply blow in the hole which will force the balloon to expand, inflate and form into its circular shape character. The balloons can be flattened and blown up over and over again. This is a traditional Japanese paper balloon toy, or kamifuzen. Despite its hole being open to air, a kamifusen remains inflated. Batting the balloon actually increases the kamifusens degree of