YETI Rambler 20 oz Tumbler Review
- Double-wall vacuum-insulated stainless steel, 20 oz
- Magnetic MagSlider lid helps hold in heat and cold
- Dishwasher safe, BPA-free and sized for standard cup holders
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A double-wall, vacuum-insulated steel tumbler with a magnetic slider lid that fits a standard cup holder. Here's what it does brilliantly, and the one thing it doesn't promise.
Quick verdict
The YETI Rambler 20 oz Tumbler pairs double-wall vacuum-insulated stainless steel with YETI's magnetic MagSlider lid, a No Sweat design and a body sized for standard cup holders. It is dishwasher safe and BPA-free, and the DuraCoat finish on colored versions is made not to crack, peel or fade. The lid is not leakproof, so it belongs upright in a cup holder or on a desk rather than in a bag, but as an everyday hot-and-cold tumbler it is outstanding.
Pros and cons
What we like
- Double-wall vacuum insulation for both hot and cold drinks
- No Sweat design keeps the outside dry
- MagSlider lid uses magnets to hold its slider in place
- Dishwasher safe and BPA-free
- Sized to fit standard cup holders
- Tough stainless steel body; DuraCoat colors resist cracking and fading
What could be better
- The MagSlider lid is not leakproof and won't prevent spills
- No handle, which some prefer for hot coffee
- At 358 grams empty, heavier than a plastic travel cup
Key features, explained
Double-wall vacuum insulation
The Rambler is built from durable stainless steel with two walls and a vacuum between them. A vacuum barely conducts heat, so very little warmth escapes from coffee and very little outside heat reaches an iced drink. That is what lets a vacuum tumbler hold temperature far longer than a single-wall cup or glass. For the best results, preheat it with hot water before pouring coffee, or drop in a few ice cubes for a minute before filling it with something cold.
MagSlider lid
The 20 oz Rambler comes standard with YETI's MagSlider Lid, which uses magnets to hold its slider in place over the sip opening. Closing it adds a barrier that helps keep drinks contained and slows heat or cold from escaping. YETI is upfront that the lid is not leakproof and will not prevent spills, so treat it as a splash guard for a desk, dashboard or campsite table rather than a seal for a backpack. Keep the tumbler upright and it does its job well.
No Sweat design and DuraCoat finish
Cold drinks in an ordinary glass bead with condensation. The Rambler's No Sweat Design keeps the outside dry, so there are no rings on the table and no slippery grip on a hot afternoon. On colored versions, YETI's DuraCoat coating is designed not to crack, peel or fade. The stainless steel itself is rust resistant and handles the knocks of camp, boat and truck life far better than glass or ceramic.
Size and cup holder fit
The tumbler holds 20 ounces, stands 6 7/8 inches tall and has a 3 1/2-inch lip diameter. YETI sizes every 20 oz Rambler tumbler to fit standard cup holders, which makes it a natural companion in the car, the truck or the boat. It weighs about 358 grams empty, the trade-off for a steel body with two walls. The wide opening also makes it easy to add ice cubes and easy to reach inside with a sponge.
Everyday care
Ramblers are dishwasher safe and BPA-free, which makes daily use painless. For coffee, a quick rinse after each use keeps oils from building up, and an occasional soak in warm water with a little baking soda clears lingering flavors. Wash the lid on its own and let everything dry fully before you put it back together. With that minimal routine, the tumbler should stay fresh-tasting for both coffee in the morning and iced water later in the day.
YETI Rambler 20 oz Tumbler specs
| Brand | YETI |
|---|---|
| Model | Rambler 20 oz Tumbler |
| Part number | 21070060018 |
| Capacity | 20 oz |
| Material | Stainless steel |
| Insulation | Double-wall vacuum |
| Lid | MagSlider (magnetic, not leakproof) |
| Height | 6 7/8 inches |
| Lip diameter | 3 1/2 inches |
| Weight | 358 g |
| Cup holder | Fits standard cup holders |
| Care | Dishwasher safe |
| BPA-free | Yes |
| Prices change often. See the live price: Check Price | |
Who should buy it?
Great for
- Commuters who drink coffee in the car
- Iced drinks at camp, on the boat or by the pool
- Desk or dashboard use where the cup stays upright
Skip it if
- You need a leakproof cup to toss in a bag
- You want a handle for hot drinks
- You prefer to sip through a straw
Frequently asked questions
Is the YETI Rambler 20 oz leakproof?
No. YETI states that the MagSlider Lid is not leakproof and will not prevent spills. It helps contain drinks and hold temperature, but keep the tumbler upright.
Is the YETI Rambler 20 oz dishwasher safe?
Yes. YETI Ramblers are dishwasher safe and BPA-free, so the tumbler can go in with the rest of your dishes.
Does the YETI Rambler 20 oz fit in a cup holder?
Yes. YETI sizes its 20 oz tumblers to fit standard cup holders. It stands 6 7/8 inches tall with a 3 1/2-inch lip diameter.
Will the YETI Rambler sweat with iced drinks?
No. The double-wall vacuum insulation and No Sweat design keep condensation off the outside, so your hands and table stay dry.
Can you use the YETI Rambler for hot drinks?
Yes. It is designed for both hot and cold drinks. Vacuum insulation slows heat loss, and the MagSlider lid helps hold warmth in.
Final verdict
The YETI Rambler 20 oz Tumbler does the basics exceptionally well: double-wall vacuum insulation for hot and cold drinks, a No Sweat exterior, a magnetic MagSlider lid, a cup holder-friendly shape and dishwasher-safe, BPA-free construction. Its one real limitation is that the lid is not leakproof, so it is a cup for upright use, not a bottle for your bag. Within that role, it is about as dependable as a tumbler gets.
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