Days and adventures are best when you start with your YETI Rambler Tumbler. Made out of kitchen grade stainless steel, this great mug keeps cold drinks cold and hot drinks hot. Now with a MagSlider lid, you won't have to worry about splashing on the go. The no sweat design keeps the tumbler clean and easy to grip. The YETI Rambler Tumbler is the only travel mug you will need and the only one you really want.