The Summit County III has been discontinued. It was replaced by the Keen Summit County.
If you're looking for something new, check out the best winter boots for 2020.
Mountain Gear says:
Serious winter performance in a masculine, technical hiking boot. The warmest insulated boot from KEEN's winter line, the Summit County III features 400g KEEN.Warm insulation and a waterproof, breathable membrane. Shellback heel support provides additional stability and is easily snowshoe compatible. The dual-climate weather outsole gives you sure-footing in slick, wintry weather.
Historic Range: $74.83-$118.99