The Swig® 20 Oz. Matte Bottle keeps drinks cold up to 24 hours and hot up to 12 with its double walled, vacuum sealed, copper-coated insulation. When you are finished, toss it in the top rack of the dishwasher for easy cleaning! A silicone base minimizes slips and tips, plus it's a quiet landing when you put your bottle down. Also features a stainless steel screw top lid with flip ring for easy carrying, and a rubber gasket to ensure a tight seal with no leaks. All colors feature a silver lid.