It has only been touched on briefly, up to this point, but this is something that you should be aware of. Some sellers will include a temperature rating with their model and this will give you an idea of how warm it is. At least, this is the theory behind a temperature rating. The reality is there is no standard way to measure the warmth of a pair of ice fishing boots. While a temperature rating can be nice, it may not be the best way to determine the effectiveness of a specific model.