The Rambler series of drinkware is the first line of YETIs you can fit in your hand. And, yeah, we over-engineered these YETI Tumblers to be virtually indestructible and keep your drink as cold (or hot) as science allows. With 18/8 stainless steel construction, double-wall vacuum insulated cup, and No Sweatā¢ Design, theyāre perfect for the deer lease, cleaning table, or just the times in between your outdoor adventures. Whether itās cold drinks or hot beverages, YETI provides insulated cups that can keep your favorite drink, just the way you want it.