I am new to Birkenstock shoes.  I just purchased 1 pair and love how they are helping correct my feet problems.  I decided to get these as around the house shoes.  They fit awkward the first few hours but I have been wearing them for 3 days now and they feel fine.  I'm not crazy about the material they are made of because it just looks a little plastic to me but they feel good so I'm happy.  I just hope they last.