Swig 18 oz. Tumbler Mug, Wild Flower
Comes with a spill-resistant and shatterproof lid, which seals tightly with a rubber gasket and can be covered with a sliding closure to minimize spilling. The non-slip silicone base keeps your cups from tipping or making too much noise when you set them down. All are dishwasher safe.
Keeps drinks cold up to 9 hours and hot up to 3, thanks to its double-walled, vacuum-sealed, and copper-coated insulation.