Yeti Rambler 30 oz. Stainless Steel Vacuum Insulated Tumbler Keep beverages cold or hot on the go with the Yeti Rambler 30 oz Stainless Steel Vacuum Insulated Tumbler With MagSlider Lid ($45). Image Source: amazon.com Yeti Rambler 30 oz Stainless Steel Vacuum Insulated Tumbler With MagSlider Lid $45 from amazon.com Buy Now