The Classic Mid Vintage is 100% waterproof and comfort rated from temperate to -40 degrees Fahrenheit.Manmade. Rubber sole. Shaft measures approximately 8" from arch. Heel measures approximately 0.5" Boot opening measures approximately 13.25" around. 100% waterproof and comfort-rated from -40 degrees Fahrenheit, this Bogs rain boot is equipped for even the wettest of days.