Birkenstocks-cork/rubber separating? Which glue?!

[rollonthesummer]

I have had many pairs of these and this has never happened before--grrr!

Can anyone recommend a strong flexible glue that might repair it and hold the layers together? Copydex? Superglue? Uhu?!

Anyone?

Gorilla Glue. Saved a pair of my sandals.

Lovely, will try that :)

I used superglue on mine. So far they are holding (I did it about 6 weeks ago).