The YETI Rambler® 14- ounce mug made out 18/8 kitchen-grade stainless steel is an over-engineered camp mug that is durable enough to strap to the outside of a pack and go. Its double-wall vacuum-insulated body keeps this mug from burning your hands, while keeping anything from coffee to ice hot or cold. This mug comes with the standard Rambler 30 oz. lid, but is also compatible with the 30 oz. MagSlider Lid. Dishwasher safe.