These are the most comfortable shoes I have ever worn.  They have not given me any problems at all.  I don't see how they could shrink really.  I wear mine everywhere and wash them in soapy water.  No shrinkage.  I've had mine for several years. They are great for anyone who has to be on their feet a lot.  I do wear thin socks with them because they do tend to make my feet a bit sweaty in summer.