The picture will undoubtedly give you a good idea of what it is & how it's used - something like a large towel combined with Battling Ropes.
Although there are undoubtedly several alternative items (such as the aforementioned large towel) which could be put to work like this, the Neuro-Burner looks ideal for the 'bootcamp in the local park'. One trainer, a handful of clients and fairly limited space.
Well worth checking out. The Neuro-Burner.