YETI Rambler 14 oz Mug, Stainless Steel, Vacuum Insulated with Standard Lid. The YETI Rambler 14 oz. The mug is the toughest, most over-engineered camp mug out there. The full-loop Triple Grip Handle is comfortable for wider hands, so you can fit your mitts fully around your morning joe The YETI Rambler family is as tough as hell and will keep your drinks cold (or hot) as science allows. With 18/8 stainless steel construction, double-walled vacuum insulation, and no sweat design, they are perfect for a deer lease, a cleaning table, or just the right amount of time in your outdoor exploration. Find the right Rambler Tumblr, Bottle, Colster, or Jug for your next adventure.