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

This is the best cup I have ever used, so much so that I use it for my everyday cup of coffee at home rather than a mug. It keeps drinks both hot and cold for so long. They are a little more expensive than other options, however I've had mine for 5 years and it still holds up and works like when I first purchased it. It is the perfect size, fits in a cupholder. It can be easily disassembled and put in the dishwasher.

The YETI Rambler 20 oz tumbler absolutely lives up to the hype. From the moment you pick it up, you can tell it’s built to last—solid, durable, and designed with real everyday use in mind. The insulation is outstanding. Hot drinks stay hot for hours, and cold beverages stay ice-cold even in warm conditions. I’ve left ice in it for an entire day and still had some left the next morning—very impressive. The MagSlider lid is a great feature. It’s convenient, easy to use, and helps prevent splashes, especially when you’re on the go. While it’s not 100% leakproof, it does a great job for normal use like commuting or working at a desk. The size is perfect—fits comfortably in most cup holders and has a great capacity without feeling bulky. The finish also holds up well over time and resists scratches better than expected. Overall, this is one of those products where you truly get what you pay for.

That's a really nice tumbler. The color is pretty pink with ruff feel. The lid is not leak proof, but the magnetic flip is so nice. Makes it easy to clean, so no mold or bacteria grows on lid. This cups keeps my coffee hot for about 2-3 hours. I was hesitant to buy it because it's not leak proof, but I'm glad that I did.

This YETI 20 oz Rambler tumbler is amazing! The vacuum insulation keeps drinks hot or cold for hours, and the stainless steel construction feels extremely durable. It comes with the standard lid that fits perfectly in a cupholder, making it ideal for commuting or travel. Perfect for coffee, tea, or any beverage on the go. Overall, a high-quality, reliable tumbler that I’d highly recommend.

Bought for my husband to take coffee to work in the mornings. It's a great size, keeps the coffee very hot (he puts a little cool water in to mix and leaves the lid off until he is ready to go). Washes great in the dishwasher. Very durable. I have one in a different color that I use for water at home. Keeps my water cool all day. Easy to drink out of.

Great coffee cup. Coffee stays hot for hours even on cold days. The yeti magnetic lids are great. That venom green color really pops too. I needed something bright because I set my cup all over the place and would forget it if it wasn’t so loud. Lol

Got exactly what I ordered. A nice 20oz Yeti. Very durable. So far I’ve only used it for coffee. And it has kept it very hot for multiple hours. I’m happy with this purchase and price point.

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.