NWOT Owala SmoothSip Slider 12 oz Tumbler - Shy Marshmallow (White) Great little commuter cup to take your coffee, tea, or beverage of choice with you on the go and keeping it nice and hot. Cold brewed or iced coffee? It can do cold all day too! It’s cup holder friendly and leak proof (when closed 😉), so this little tumbler can literally go from your cup holder to your bag without spilling a drop of your precious caffeine or whatever beverage keeps you going!