Ozone disinfection is the addition that separates this four-shoe dryer from a plain warm-air stand. Forced air combines with heat from 95 to 131 F, or ambient temperature with the heat button off, to dry boots and sneakers without cooking the materials, while the ozone cycle reaches inside each shoe to cut bacteria and odor. A timer covers 0 to 180 minutes and the unit shuts off automatically if the temperature climbs too high. Four tubes stand on the base, with the lower pair measuring 13.5 inches. The PP, fiberglass and ABS body is 15 by 10 by 20.5 inches, weighs 5.5 lbs and draws 250W at 120V, running quietly enough for a mudroom.