Stanley The Quadvac Trigger Action Mug , Hammertone Gree, 20OZ

This is one tough mug. Its outfitted with thicker-than-usual steel for a lifetime of Stanley durability and innovative QuadVac insulation for better thermal protection. You also get a number of thoughtful features, like the trigger-action lid for one-handed sipping and the grip wrap with a finger loop that flattens to fit inside your pack.