Has anyone else seen this? (Monkeyfeet)

[unfetteredpast]

https://animalhousefitness.com/products/monkeyfeet

As if I need another fitness gadget, but this one looks kind of cool.

I wonder if moving the weight further out on the lever (at the bottom of the foot) compared to more centrally located (behind the knee) makes a difference. Would that require more core stability?

That's the argument I'm going with to justify another fitness toy!