YETI Rambler 10 oz Stackable Mug masters drink temperature and storage. This 18/8 kitchen-grade stainless steel mug features double-wall vacuum insulation to keep beverages hot or cold from start to finish. A DuraSip Ceramic Lining ensures easy cleanup and stain resistance. Designed for convenience, its stackable form and welded handle offer compact storage and a secure grip. A splash-resistant MagSlider Lid adds functionality, and the entire mug is dishwasher safe.