Days on the dock are made better with the YETI Rambler 30oz Tumbler. It'll keep your dinnertime drink cool well past sundown or your coffee piping hot throughout the morning. The Rambler® 30oz Tumbler is made of 18/8 kitchen-grade stainless steel, has double-wall vacuum insulation, and No Sweat Design. It also comes standard with the YETI MagSlider Lid, which harnesses the power of magnets to keep your water, beer, or favorite drink on lock. This durable cup is dishwasher safe, BPA-free, and ready for just about anything.