The YETI Rambler Lowball can hold 10 oz. of your hot morning coffee or a good old fashioned nightcap, making it your hot-and-cold compadre for day or night. We over-engineered tbe Lowball with kitchen-grade 18/8 stainless steel and double-wall vavuum insulation, for a perfect drink from first sip to last. No sweat Design. Rambler 20 oz. Tumbler lid compatible. Lid not included.