Very warm and comfy, and they don't come off my heel like so many other slippers and moccs I had did in the past.  Nice and warm too.  I wear them with two pairs of socks, as the 8-9 size is just a tad too big.  I wear size 8 shoe, so if you are a half size, I'd go down a size, as they do tend to run a bit large (at least mine did). They are so cute and fuzzy!  I couldn't ask for a more comfy slipper/mocc to wear around the house!  Very satisfied..