YETI Rambler 20 oz Stainless Steel Vacuum Insulated Tumbler w/MagSlider Lid

I love yeti ramblers. They’re my favorite, go-to cup for hot or warm beverages. They fit in my car’s cup holders. And I love the magnetic closure which is easy to clean and quite functional (unless you totally drop it.) keeps cold beverages cold and hot beverages hot, for close to 4 hours.

I love the quality of this Yeti mug that I bought several. I love how well it fits in my car holder and keeps the drink the right temperate for hours. The cap is the best design I have ever seen with magnet that makes cleaning a breeze!

The best hot cold Rambler I’ve used. This cup keeps liquids hot all day and night and cold the same. The seal is powerful if you seal it after pouring hot water into it. It’s a struggle to open so do not seal the cup if you want to sip what’s inside. No spills and fits perfectly in your car’s cup holder.

Love this insulated tumbler!! I purchased it to be able to fill with hot tea when I am on the go in the car. It is well made, the size is perfect for me, and due to the shape it fits well in the cup holder in my vehicle. I ordered the pink and it is a very pretty shade. It keeps my tea hot for many hours. The lid fits tight and is easy to use when I want a sip. So glad I purchased this tumbler!!

Great cup! Husband loves it! Keeps coffee hot for hours. Easy to hold with the textured exterior, as he is a cup dropper! Super durable and seals with no leaking! Highly recommend!

I absolutely love this tumbler and I use mine daily. It keeps my coffee or tea warm for hours. The 20 oz size is plenty big for me and leaves extra room for milk. I used to have a knock-off version that was gifted to me and never used it because the closure wouldn't stay in place - the yeti has the magnetic slide which is just amazing and keeps the flap in place while drinking and easily slips closed when not. The opening is wide enough to make it easy to clean by hand and it is also dishwasher safe. Great selection of colors so you can find one that is perfect for everyone.

The YETI Rambler 20 oz stainless steel tumbler is solid, durable, and does exactly what it’s known for. It keeps drinks cold for hours and hot drinks warm much longer than standard cups, which makes it great for everyday use, errands, or long days out. The stainless steel feels heavy-duty and doesn’t dent easily, and the size is perfect without being bulky. I like that it fits most cup holders and doesn’t sweat on the outside, so there’s no mess. The lid seals well and is easy to clean, though it’s not completely leakproof if tipped over. It’s also dishwasher safe, which is a big plus. While it is pricier than similar tumblers, the quality and performance make it worth it. Overall, it’s a reliable, long-lasting tumbler that keeps drinks at the right temperature and holds up well to daily use.

The Build & Insulation As expected from YETI, the build quality is top-tier. The 18/8 stainless steel construction feels substantial in the hand and is puncture- and rust-resistant. The double-wall vacuum insulation performs exactly as advertised: Heat Retention: Keeps coffee piping hot for hours, even in freezing temperatures. Cold Retention: Holds ice remarkably well, making it perfect for long summer days. No Sweat Design: The exterior remains dry and easy to grip, regardless of the internal temperature. The MagSlider Lid is a standout feature. While it isn’t 100% leak-proof (don't toss it upside down in a backpack), the magnetic sliding mechanism is incredibly smooth and makes cleaning a breeze since the magnet pops right off. The "20 oz" Catch Here is the most important takeaway for daily use: this is functionally a 16 oz tumbler for transportation. While the vessel itself technically holds 20 ounces of liquid when filled to the absolute brim, that measurement does not account for the displacement of the lid. Because the MagSlider Lid sits deep within the rim to create a secure seal, you have to leave a significant amount of headspace to prevent overflow when closing it. If you are looking to fill this up at a coffee shop or at home and then put the lid on for a commute, you can only really store a 16 oz drink. Filling it beyond that point results in coffee splashing out the sides the moment the lid is pressed into place. The Verdict The YETI Rambler 20 oz is an over-engineered, aesthetically pleasing, and highly effective piece of hardware. However, if you specifically need to transport a full 20 ounces of liquid with the lid on, you may want to size up to the 30 oz model. If you’re comfortable with a true 16 oz capacity for mobile use, this remains the gold standard for tumblers. Pros: Indestructible build quality. Superior thermal insulation. Dishwasher safe and easy-to-clean lid. Cons: Functional capacity is only 16 oz when using the lid.