I purchased these specifically because they offered foot/arch support.  I have Plantar Fasciitis and was looking for a slipper that would not make that worse.

I would not call the the most warm and cozy slipper I have ever owned but I find I can wear them for long periods around the house and to go out to check the mail.  They stay on my feet and are easy to get on and off.

I wear a size 10 to 10.5 shoe and got a size 11 slipper that fits fine.