bouncy houses have been doing this for years... in other news some have concrete in them to make them more permanent: https://www.youtube.com/watch?v=fPPAXH1Dlw

bouncy houses have been doing this for years... in other news some have concrete in them to make them more permanent: https://www.youtube.com/watch?v=fPPAXH1DlwA https://www.youtube.com/watch?v=fPPAXH1DlwA