The title says it all.  The sole is simply glued on to the cushion part of the shoe.  The sole on my right shoe started to separate after 10 days from the cushion part of the shoe.

Now I am looking for some glue.  My first attempt didn't work.  Luckily I still have the receipt.

For now on I am going to look to see if the sole is just glued to the rest of the shoe and avoid this style of shoe.