Any recommendation on rubber biodegradable filament supplier?

[Lukehills]

Hi,

I'm looking into any rubber filament providers, if any at all? Specifically looking into rubber like filaments that 100% biodegradable and eco friendly. This would be to develop a style of sandal/flip flop.
Any advice would be greatly appreciated?
thanks
luke

[curious aardvark]

you're best bet is probably polymakr polyflex.
It's pla based - so technically biodegradeable. The rest are pretty much all urethane based - so not so biodegradeable.