When I was finished swimming, and was going to pack to go back to my home I had to quickly deflate my inflatable tire which was really hard because I had to push on the knop of the tire to let the air out and with the other hand I had to push on the tire to make pressure for the air to escape. So I invented the ‘helper for deflating inflatable things(+keychain)(+with lock)’ to use 2 hands to make pressure and let the 3d print make the air for the knop go out faster which makes this process a lot faster.

I hope you will like this model!