re-use / green design

’re-use’ is not only a sport game support tool but also can be used as a garbage bag that can put garbages after finishing the game.
You blow air in that tool to use ‘re-use’ as a support tool, and after cheering. Open the plastic bag and let the air out and use as a garbage bag.
Spectators throw away over 6-7tons of garbage after the game. Over half of them are just left in the stadium.
This problem has become a social issue, and many campaigns have proceeded to resolve that problem but it was not successful.
We drew 1+1=0 concept by combining two dispensable things that are sport game support tools and garbage bags