After returning four very similar slippers, I finally found a pair that fit my long, skinny feet. I think it is the elastic side gores that work well to hold my slippers on. Otherwise, I tended to walk out of the others. Warm, comfortable and well padded (so far after just three weeks). Others tended to flatten out in the heel since they lacked high density foam to go with the softer "memory” (which, alone, quickly tended to develop amnesia). Hopefully, I’ll still like these after another month.