I bought these in the summer and thought they would be hot & scratchy but they are not hot - they let my feet breathe - and they are not scratchy.  I have plantar facitous (sp?) and need the arch support but its hard to find in a slipper.  This is perfect for around the house and we have hardwood floors too so it doesnt scratch those because the bottom is like a real hard dense felt.  I also bought a pair for my fiance and he loves his too!