Polymer bank notes last two and a half times longer than cotton based ones http://www.bankofcanada.ca/2013/04/publications/press-releases/bank-canada-unveils-ne

Polymer bank notes last two and a half times longer than cotton based ones http://www.bankofcanada.ca/2013/04/publications/press-releases/bank-canada-unveils-new-5-and-10-polymer-bank-notes/ http://www.bankofcanada.ca/2013/04/publications/press-releas.... They may not be damaged by water but they do get wet which is a pain.