How do you generate the tension required for the removable membrane to support body weight - the brooks works because it is machine tensioned and a permanent fixture.
I can't see from your model a usable ratchet system for creating the required tension,
the method that is shown would require way too much force, a lever system is going to be inoperable for most people
like a ratchet system from those swanky shoes (heineken has removed the power of finding out what shoes exactly)
like a ratchet system from those swanky shoes (heineken has removed the power of finding out what shoes exactly)