The YETI Rambler Lowball is a 10 oz stainless steel insulated cup tumbler designed by YETI. This model, YRAM10S, is known for its high-quality construction and insulation properties, keeping drinks cold or hot for extended periods of time. It also comes with a lid to help prevent spills and maintain the temperature of the beverage. With the YETI brand reputation for durability and reliability, this tumbler is a popular choice for both outdoor activities and on-the-go use.