Insulated rubber boots, size 8

These boots were purchased from Sierra Trading Post. There is no brand on them, but they are a size 8 (fit me easily at 8.5), and a rich purple color. They have no defects, flaws, or signs of wear. Soles look as if never worn. Although they are insulated, I am not sure to what degree. They are similar to Bogs and Muck boots, but are neither of these brands-only listed for exposure. Again, they are not Bogs it is only listed for exposure.