Coolsculpting is FDA approved for abdomen, back, inner thighs and outer thighs. It is not approved for knees and calves. I have seen some photos from other providers that do not look pleasing if these areas are treated.
CoolSculpting is not FDA approved for fat reduction from the knees or calves. It is possible to sometimes treat a non-FDA approved area, but you would need to be examined to determine if that might be possible.