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The Beast 20 oz Tumbler by Greens Steel is a premium, vacuum-insulated stainless steel travel flask designed for professionals who demand durability, style, and superior temperature retention. Crafted from high-grade 304 18/8 stainless steel, it features a double-wall vacuum insulation that keeps beverages hot or cold for hours. The tumbler includes a leakproof, easy-to-clean pop-up lid and comes with two reusable stainless steel straws and a cleaning brush, all presented in a sleek Arctic White powder-coated finish that resists rust and sweat. Perfectly sized for standard cup holders and built for daily travel, it’s the ultimate companion for millennial managers who refuse to settle for less.







| ASIN | B074L7M8DT |
| Age Range Description | Adult |
| Best Sellers Rank | #2,125 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #37 in Insulated Tumblers |
| Brand | Greens Steel |
| Brand Name | Greens Steel |
| Capacity | 20 fluid ounces |
| Color | Arctic White |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.6 out of 5 stars 81,579 Reviews |
| Finish Types | Smooth and shiny |
| Included Components | Lid, Sleeve, Straw |
| Item Dimensions W x H | 3.9"W x 3.7"H |
| Item Weight | 15.2 ounces |
| Manufacturer | Greens Steel |
| Manufacturer Part Number | 43219-83166 |
| Material | Stainless Steel |
| Material Features | Insulating |
| Material Type | Stainless Steel |
| Material Type Free | BPA Free |
| Model Number | 43219-83166 |
| Number of Items | 5 |
| Occasion | Travel |
| Other Special Features of the Product | insulation |
| Pattern | Solid |
| Product Care Instructions | Hand Wash Only |
| Product Style | Modern |
| Recommended Uses For Product | traveler |
| Reusability | Reusable |
| Shape | Round |
| Size | 20 Ounces |
| Special Feature | insulation |
| Specific Uses For Product | Cold Drinks |
| Style | Modern |
| Theme | Sports |
| Unit Count | 1 Count |
D**R
Happy, happy, happy!
Excellent cup! Keeps drinks cold as well as any more expensive make. Came with two stainless steel straws and a brush to clean them. The straws tend to rattle a little when in the truck, so I opted to just use the seal tite closure on the lid while driving. The lid does screw in and it is leak proof when the closure is in place. The portion of the cup that sits in the cup holder is slightly larger in diameter than a yeti, so it may fit a little snug and not bottom out in the holder. Comfortable handle. All around, an excellent cup, certainly as good as any other and a little cheaper. Well packaged and fast delivery. Won't hesitate to buy another when needed.
K**N
Finally, a perfect replacement and upgrade for my favorite mug.
I have been using the same 20-oz Aladdin mug I received as a Freshmen Orientation gift in college for the past 23 years. I have been somewhat nervous about my practice of drinking out of a mid-90's, frequently dishwashed plastic mug (most certainly NOT BPA free), but I never found a replacement mug I liked. I had tried using other metal mugs (the kind you get as freebies at conferences or sports events), but was frustrated by the sliders which trapped liquids and couldn't be cleaned (I drink homemade lattes daily, and trapped milk goes rancid before I even leave work for the day), and the mugs couldn't hold up in the dishwasher - a leak would always develop, usually in the base, and you could hear water sloshing around inside the "vacuum-sealed" mug. Additionally, these mugs were always 16 oz or smaller. I know that 4 oz doesn't seem like a lot, but I would always notice a difference when I ran out of coffee before I expected to. I decided it was time to find a replacement for my favorite mug. I wanted something dishwasher safe (that wouldn't develop a leak in the mug if washed and had a lid that was able to be easily fully disassembled and reassembled for thorough cleaning). It needed to be BPA-free, non-reactive (I use Essential Oils in my water, and would like to use them in my mug, which I couldn't do before, as they can react with plastic and aluminum, but are safe with stainless steel and glass), spill resistant (my Aladdin mug had open holes with no slider), insulated for hot and cold, fits in a standard automotive cup holder (my old mug was too big, but fit nicely into the center console of my mid-90's Outback (it's like they were MADE for each other!)) and had to hold 20 oz. The BEAST has fit the bill to a T. I have only had this mug for two days, and have only used the mug with the seal-able lid. My coffee stays hot until I have finished drinking it (which can be a few hours while I work at my desk). When my coffee is done, I can easily take everything apart and thoroughly rinse the mug and lid and refill with ice water with no lingering coffee flavor. I anticipate it will take a little to get used to drinking through a stainless steel straw, but I am VERY happy that this was included. A stainless steel straw will allow me to use this mug with essential oils, as I will be able to keep the oils away from the plastic lid by sipping through the non-reactive straw. An unexpected feature was the nose guard on the slider of the lid. I have had the experience with past mugs with sliders that, when I go to sip my beverage, the little tiny hole which is provided to allow air to enter the mug to replace the liquid coming out gets covered up and sealed by the tip of my nose as I drink, slowing or stopping the flow of the beverage through the drinking hole. This mug has a raised section which protects the air hole without preventing air from entering it. It is a little thing, but something I notice (with relief) every time I take a sip. The exterior of the mug is more compact than I expected, which is great. However, for some reason, it feels larger than it looks when I hold it. I have somewhat small hands (I wear Men's S or XS gloves/ Women's S or M depending on the style), and am finding myself holding the mug closer to the base for a better grip. I read the reviews from other customers and one of the tipping points for my decision to buy the BEAST was the customer service reputation from Greens Steel. I have received two emails from Greens Steel so far, checking in on my purchase to make sure I am satisfied and to let me know that they are available to help if I have any questions or encounter any issues with my mug. The reviews from the other customers make me feel like this concern and customer engagement is genuine and heartfelt, and as a result, I won't hesitate to get in touch with Greens Steel with any question I have, if necessary.
N**A
Best Have ever used and ive tried alot of them
These are the best Tumblers ever, ice melts slowly, and beverages stay so cold and the metal straws are so much better than plastic,we have bought 6 so far because of how much we love them and wanted to share with our family they are awesome, cant say enough about them , great packaging also , in my opinion you wont regret buying this product.
C**S
Beast vs. Stanley
I can’t say enough about this cup. I bought it January 2023 and it’s January 2026 now. I got a Stanley for my birthday as a gift so I compared the two. My $30 dollar rainbow beast to the $50 Stanley glitter bomb. The quality is absolutely amazing on both cups my drink is cold and still has ice after 14 hours I haven’t tested for hot in my 40oz but I have the 20 and it keeps my coffee hot through lunch. I love the design and colors offered on beast the rainbow is my favorite. The beast tumbler is lighter than the Stanley and I prefer the removable cuff handle that I have for the beast tumbler. Car cup holder though the Stanley was a better fit but it’s really tall. My beast fits in the cupholder if I had the coaster in the bottom of the cup holder so eh not a big deal. The one thing I like the Stanley over the beast is the lid. The beast has an opening so that you can use it with or without a straw so bugs can get in hair/dust while the Stanley is closed top 100%. I love both cups but for quality and bang for your buck beast is the winner.
Z**K
Great cup, lid could use redoing.
Im a delivery driver in AZ so keeping ice for most of the day is very important to me. This is an awesome cup the handle cant loosen like most others, the ice stays ice for a long time,and its huge but can still fit in the cup holder. Now the negative, metal straws arnt feasible in AZ because of heat so I had to swap it out for a plastic straw. And unlike other cups this doesnt have a seal around where the straw goes so it will leak if tipped over. Also since it isnt really made for a straw you have to adjust the lid to which side you drink from. A new lid with a sealed straw hole in the middle would be helpful. Overall 4/5 stars
K**E
Great value
Feels heavy duty, keeps my ice water cold all day. Holds plenty. Fits in the cupholder of my truck. Comes with a nice stainless steel straw and a brush to clean that with. Great value, I highly recommend.
D**E
Perfect… for me.
Love love love this tumbler! Fits in my car cup holders and love the coloring and it keeps ice for over 24 hours in triple digit heat. Checked all my boxes
T**L
Hope you’re thirsty!
It’s huge! If you’re really thirsty, always got something in one hand, and constantly on-the-go, this is the tumbler for you! Holding 42 oz of your beverage of choice, this monster will keep it cold or hot long enough for you to drink till your eyeballs are floating! The ergonomic handle ensures that you have a solid grip on this behemoth, making drinking on the run super easy! Plus, it comes with 2 straws, one straight, and the other slightly bent, giving you options for directional sippage. It also comes with a dedicated straw cleaner, so don’t worry about those pesky germs that like to hide in those hard-to-reach places. And did I mention stylish? Well, this mug has that, too! I went from a plain ol’ nobody with a dinky ol’ cup, to the talk of the neighborhood when I ride around holding my ginormous, green, fluid dispensing device. It simply looks awesome.
M**N
Perfect 🥰 💞 👌
I like so much 🥰🥰🥰🥰 the color is so beautiful🥀🥀🥀🌹🌹🌹
T**S
Nie zakręcany
Niestety wieczko nie jest zakręcane, tylko na wcisk. Moze to być problemem jak kubek ma być używany w podróży lub między domem, samochodem, pracą. Małą nieostrożność i zawartość wylana.
B**E
Great
Absolutely great
D**N
Tumbler
Colour ideal for me appears to be durable and it washes well and comes up looking clean Lid fits well and at present no leaks reported. Only used for cold drinks so far and it keeps it cool for a long time. For the cost good value for money there are some more expensive ones on the market. Pleased so far.
M**L
das Biest unter den Thermos-Bechern! fast 100% Empfehlenswert!
*** - Update nach fast 6 Jahren Nutzung - *** Nun sind auch die Haltegriffe da. Der Thermobecher ist nach all der Zeit immer noch voll funktionstüchtig. Die Beschichtung ist immer noch vollständig und ohne Kratzer. Becher hat nun auch schon die ein oder andere Reise hinter sich und sieht trotzdem Top aus! Fazit: Der Thermobecher muss sich nicht vor den großen Marken wie Yeti, Camelbak oder Stanley verstecken. Habe mittlerweile auch ähnliche Produkte dieser Hersteller. Im Preis/Leistungsverhältnis ist Greens Steel die unangefochtene Spitze!!! Bin froh, damit so einen Glückstreffer gelandet zu haben. :) *** - Update nach ca. 2 Jahren Benutzung - *** Nach fast zwei Jahren der Benutzung dieses Bechers kann ich immer noch volle 4 Sterne vergeben. Das Material ist beständig, und weist bei mir keinerlei Gebrauchsspuren auf. Die regelmäßige Reinigung konnte bisher keine sichtbaren Spuren hinterlassen. Thermofunktion ist nach wie vor gegeben. Über die Zeit bin ich auch auf Zubehör gestoßen die die "kleinen" negativen Punkte aus der Originalrezension behoben haben. Allerdings kann ich trotzdem nur 4 Sterne geben, da diese nicht vom Hersteller des Bechers stammen, ansonsten hätte ich eine 5 Sterne Bewertung abgegeben. Tolles Produkt, umso mehr freue ich mich auch über die Beständigkeit des Materials. Rundum hat der Becher noch seine schwarze Beschichtung intakt. Klasse! :) *** - Original-Rezension- ** Gekauft habe ich mir diesen Thermos-Becher aus verschiedenen Gründen: - Anders wie Unterwegs,bei der Arbeit, Wandern oder anderen Aktivitäten möchte ich Zuhause nicht dauernd eine Flasche mit mir herumtragen oder herumstehen haben. Gleichzeitig möchte ich auch eine ordentliche Menge an Flüssigkeit bei mir haben um nicht ständig nachfüllen zu müssen -Wenn ich mir mal ein kaltes Getränk zubereite, wird dieses in einem normalen Glas schnell wieder "warm". Ich habe dann auf dem Tisch viele Abdrücke vom Kondenswasser. Weiterhin bei Büroarbeit ist nervig nach jedem Schluck die Hand trocken zu wischen. All diese "Problemchen" löst dieser Becher: + Getränke bleiben sehr sehr lange kalt. Eiswürfel überdauern schon mal einen langen Morgen (8h + ) +heiße Getränke bleiben noch länger heiß +Strohhalme sind super praktisch wenn man es mag wie an der Strandbar. Toll dass diese mitgeliefert werden! +Reinigungsbürste ist top. +Deckel hält für den Hausgebrauch dicht, + schützt vor Insekten die sich gern auf süße Getränke stürzen , sehr praktisch im freien, +hat Aussparungen für die Strohhälmchen 1 Stern Abzug gibt es jedoch aus folgenden Gründen: Der Deckel ist zwar schön stabil, sieht gut aus und hält auch dicht... solange man den Becher nicht als typischen "Coffee-to-Go" Becher nutzt wie vergleichbare Produkte von Emsa oder 720dgree. Heißen Kaffee oder Tee kann man nicht bis zum Anschlag einfüllen ohne den Becher durch den Schiebemechanismus geöffnet zu lassen. Ansonsten kann es wie bei einem Vorredner passieren dass der Deckel durch den Wärmedruck aufploppt oder zumindest undicht wird. Dadurch dass man ihn zu Beginn "offen" lassen muss ist der Deckel für den unbeschwerten Transport im Rucksack also nicht brauchbar. Habe zum Test mal kaltes Wasser hineingefüllt und anschließend auf den Kopf gedreht. Der Deckel hielt das Wasser in Position aber trauen würde ich diesem Deckel in einem Rucksack indem noch andere Gegenstände sind nicht. Die Reinigung des Deckels bietet nur ein bisschen Aufwand beim Schiebemechanismus. Unter diesem Bauteil sammelt sich nämlich Flüssigkeit. Durch etwas Schütteln und kräftigem spülen kann man diese Stelle trotzdem "reinigen" allerdings wäre dies seitens der Herstellung sicherlich besser lösbar. Da ich diesen Becher aber nur daheim nutze bin ich rundum zufrieden damit. Unabhängig von der Bewertung habe ich auf der Homepage der Firma gesehen dass man für den Becher noch Haltegriffe kaufen kann. Hätte Interesse an einem solchen sofern dieser über Amazon erweberbbar ist.
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