Just think about how many used condoms there must be somewhere in the world. All the condoms you’ve ever used. And your grandparents. And theirs. Surely they could be made out of some of those plant-based plastics that are currently being developed?
And don’t get me started about disposable nappies.
vulcanized rubber isn’t, but it gets better if some biodegradable fillers are included (decomposes in years in favorable conditions)