What Our Gearhead® Experts Are Saying: "I’ve taken my Rambler 20oz everywhere—from morning commutes to weekend camping—and it’s never let me down. The MagSlider lid keeps coffee hot and water cold all day, and it’s easy to clean. It fits perfectly in my truck cup holder and still looks brand new after years of use." We rely on the Rambler Magslider Tumbler 20oz from YETI to keep our drinks at the perfect temperature through every adventure. Whether it’s piping-hot coffee at sunrise or ice-cold water after a long hike, this stainless steel tumbler delivers with unwavering dependability. Built with double-wall vacuum insulation and the genius MagSlider™ Lid, it keeps our beverages secure and ready to sip, no matter how rough the road gets. The DuraCoat™ finish resists chips and scratches, while the No Sweat™ design keeps our hands dry and our gear clean. It’s that one piece of kit we grab without thinking—because it simply works every time.