we love this booties because they are very warm and have a sole that is safe but doesn't grab (as some non-slip soles do). It is a substantial sole that can be warn outdoors.

My Mom needs warmth for her feet and walks with a shuffle, so we searched high and low and found these boots  have a good grip without grab.

the only trouble is they do run small.  I would say order a size larger than you need. You will be very happy with the Isotoner Woodlands boot.