Stay cool and hydrated during a run, or stay warm at the campsite with the Basecamp Tundra bottle. This 18/8 stainless steel vessel holds 20 ounces of your favorite beverage and the double-walled vacuum insulated copper lining keeps the contents cold for 24 hours, or hot for 12. The Tundra features a spill-resistant screw-on lid that doubles as a carrying handle. This is a premium that's a perfect match for fitness buffs, campers, hikers and other folks that like to take it outdoors.