They have been made of tortoiseshell and horn. They have been made of the finest silk and the coarsest leather. They have been made of pigs’ bladders and sheep’s intestines. They have been made of rubber (natural and synthetic). They have been made of plastic. But none of these has quite fitted the bill.
It seems that at least five research teams are working on creating a better condom. Some of the researchers are funded by Bill Gates through his foundation.
Reinforced with graphene.
Carbon sheets.
Collagen.
Polymers.
Coated with hydrogel.
Polyethylene.
Rapid deployment.
More here.