so comfy and warm, had mine for two years now and still doing well. You can wear them outside as they have a strong sole, but they are also comfy enough to wear around the house without feeling like you've got shoes on. They do start to smell after a while as all slippers will, but i've put them in the washing machine a few times and they've come out fine.
I chose these puffer jacket style slippers for my wife as she often has cold feet. Rather than have her stick said feet into my warm armpits when I wasn't looking, I made the choice based on potential warmth and comfort factor. We have not been disappointed; foot warmth has increased, armpit shock decreased and marriage happiness blossomed.
I docked a star as, in my wife's words "I look a bit like the Marshmallow Man". They ain't the prettiest.