These 20 oz. tumblers are stainless steel and spill-proof. The manufacturer says they have double walled vacuum insulation. Hot liquids will not impact the bottle's exterior, and there will never be condensation. Hot liquids will stay hot for 5 hours, and cold liquids will stay cold for up to 12 hours.
Click on the large picture to see a closeup of this tumbler. Click on the small picture to see what the top of this tumbler looks like, and to see the available colors.
Not Native American Made