You have 7 days to return it, that is all, they were pretty good for that first week. I work 12 hr shifts all on my feet and I had seen someone else write that they did the same and liked them.  After the first week, the insole started to kind of slide around a bit and they squeak with each step, loud squeaking too. Otherwise they are okay, but I would never buy them again, a bit too hard to get on because they are so stiff and the constant squeak drives me crazy.