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TOMLFF Penguin Insulated Tumbler Review: Adorable Pocket Flask With Room for One Small Drink

TOMLFF's penguin tumbler is a small double-walled vacuum flask shaped and painted like a penguin, with the head forming a screw-on lid. It holds 280 ml, about 9.5 oz, has a 304 stainless steel interior and a silicone seal in the cap, and is finished in a rubberised matte coating. It is made to be carried and to make people smile, and it does both. Its size is the thing almost every buyer needs to hear first.

By Whimsical Pris, Kitchen Editor Published September 27, 2026 Updated September 27, 2026
4.3Our score
Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask, view 2 Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask, view 3 Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask, view 4 Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask, view 5 Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask, view 6 Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask, view 7 Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask, view 8 Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask, view 9 Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask, view 10 Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask, view 11 Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask, view 12 Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask, view 13 Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask, view 14 Penguin Stainless Steel Vacuum Insulated Tumblers Travel Mug Tea Water Bottle Coffee Thermal Flask, view 15
Product gallery, 15 images
$12.66 Check price on Amazon

Prices shown were correct on September 27, 2026 and change frequently.

TL;DRThe Short Answer: Is the TOMLFF Penguin Insulated Tumbler Worth It?

Most people who buy this penguin flask are won over by its face and caught out by its size. It holds 280 ml, about 9.5 oz, which is a small coffee or a child's drink rather than a commuter's refill. Within that limit it is a proper vacuum flask, with double-walled 304 stainless steel, a screw lid with a silicone seal and a tough rubberised finish. The lid can be stiff. Buy it for a penguin lover, not for volume.

NoFussDeal rates the TOMLFF Penguin Insulated Tumbler 4.3 out of 5 at $12.66. Last updated September 27, 2026.

Key Facts

Capacity
280 Milliliters
Product Dimensions
2.8"W x 7.32"H
Item Dimensions LxWxH
2.79 x 2.79 x 7.32 inches
Item Package Dimensions L x W x H
7.68 x 3.03 x 2.91 inches
Material
Stainless Steel
Item Weight
0.66 Pounds

What Stands Out

  1. Double-walled vacuum insulation keeps hot drinks hot and cold drinks cold for hours.
  2. Holds 280 ml (9.5 oz), small enough for a coat pocket or a small bag.
  3. 304 stainless steel interior with a BPA-free lid.
  4. The penguin's head is a screw cap with a silicone sealing ring, designed not to leak even when stored on its side.
  5. Rubberised matte paint on the outside is pleasant to hold and stays cool with hot drinks inside.
  6. Measures 2.8 inches wide by 7.32 inches tall and weighs 0.66 pounds; TOMLFF says it fits most car drink holders.

Strengths and Drawbacks

What works

  • Adorable penguin design that makes it an easy gift.
  • Genuine double-walled vacuum insulation keeps drinks hot or cold for hours.
  • Small enough for a coat pocket, school bag or car drink holder.
  • Tough rubberised finish survives drops and daily knocks.
  • Screw lid with a silicone seal designed not to leak on its side.
  • Outside stays cool with a hot drink inside.

What does not

  • Holds only 280 ml, far smaller than many expect.
  • The lid can feel stiff or awkward to open and close.
  • Hand wash only; not dishwasher safe.
  • A factory smell may need washing out when new.
  • Packaging instructions are mostly not in English.

Features in Depth

01

Double-Walled Vacuum Insulation

Insulation Double-wall vacuum Interior 304 stainless steel Outside Stays cool with hot drinks

Behind the penguin paint is a proper double-walled vacuum flask with a 304 stainless steel interior. The vacuum between the walls stops heat moving through the sides, so a hot drink stays hot and a cold one stays cold for hours, and temperature retention is one of the most praised things about this flask. One owner tested it with both hot tea and cold juice and found it took hours before either changed noticeably. Because the outer wall stays cool with a hot drink inside, it is comfortable to hold and safe to hand to a child. The main path for heat to escape is the lid, so screwing it on firmly straight after filling makes the biggest difference. Preheating with hot water, or chilling with cold water, for a minute before filling also helps the small volume hold its temperature, because a little liquid loses heat faster than a lot.

$12.66 4.3/5 Check price
02

280 ml Penguin Body

Capacity 280 ml (9.5 oz) Dimensions 2.8 x 7.32 inches Weight 0.66 pounds

The flask holds 280 ml, about 9.5 oz, and measures 2.8 inches wide by 7.32 inches tall, weighing 0.66 pounds. That compact size is both its charm and its biggest drawback. It slips into a coat pocket, a small work bag or a child's backpack, and TOMLFF says it fits most car drink holders. But it holds only a small coffee or a cup of tea, and size is the most common complaint, often from people who expected a full travel mug from the photos. One owner describes it as more of a child's thermos, and it suits children, early-morning errands and a mid-afternoon tea well. Anyone who wants to carry a large coffee for a long commute will be refilling it quickly. The penguin styling is the other half of the appeal, and it is widely loved, making it a popular gift for penguin fans of all ages.

$12.66 4.3/5 Check price
03

Screw Lid With Silicone Seal

Cap Type Screw cap Seal Silicone ring Lid Material BPA-free

The penguin's head is the lid, a screw cap with a silicone sealing ring and a BPA-free construction. TOMLFF designs it to be leak-proof even when the flask lies on its side in a bag, and one owner who carries it daily finds the cap easy to use and never jams or leaks. Opinion on the lid is mixed overall, with some finding it difficult to open and close properly. That is typical of silicone-sealed screw caps: they need a firm turn to seal and can feel stiff until the ring beds in. Check that the ring sits flat in its groove after every wash, because a twisted ring is the usual cause of both a stiff cap and a leak. One owner also likes that the lid is fairly large, so it is harder to lose. And for children, one family notes the head still lines up straight after months of use, which keeps the penguin looking the right way round.

$12.66 4.3/5 Check price
04

Durability and Care

Care Hand wash only Dishwasher Safe No Finish Rubberised matte paint

The rubberised matte paint on the outside is pleasant to grip and holds up better than its cute look suggests. Durability is well regarded: one owner's flask has handled falls and public transport, and a child's has survived months of drops and a dog's chewing with only scratches. Care needs a little discipline. TOMLFF says hand wash only and not dishwasher safe, which protects both the painted finish and the vacuum seal, since dishwasher heat and detergent are hard on both. A bottle brush reaches the bottom easily. New flasks can have a factory smell, which one owner removed with a hand wash; a rinse with warm water and a little baking soda also helps. Dry the lid and ring separately so no moisture is trapped. One owner notes the packaging is written almost entirely in Chinese, so it is worth knowing these care basics before it arrives.

$12.66 4.3/5 Check price

How We Scored It

Based on
The manufacturer's published specifications and the product's live Amazon listing.
Owner rating
4.5 out of 5 on Amazon, recorded September 27, 2026
How we score
We score each thing that comes up most in owner feedback on the Penguin Stainless Steel Vacuum Insulated Tumblers. Eight things come up most in owner feedback: five draw praise, one splits opinion and two draw mostly complaints. Its ratings average 4.5 stars (72% five stars, 14% four, 9% three and 5% one or two), so every score starts at 90, that average on a 100 point scale. Where opinion is split, we take off 6. Where it draws mostly complaints, we take off 12. Then we read eight owner reviews in full, including the critical ones, and move the score up to 5 points either way depending on how the owners who mention it rated the product. Our overall score starts from the same 4.5 star average and loses 0.1 for each thing that draws mostly complaints, with 0.1 more when at least a tenth of ratings are one star, never more than 0.3 in all. Here that takes off 0.2, which gives 4.3. Read our editorial standards

Appearance

TOMLFF lists the material as Stainless Steel. One of the eight owner reviews we read mentions it. That owner gave the product four or five stars. Score 90: its 4.5 star average on a 100 point scale.

90Positive

Quality

Two of the eight owner reviews we read mention it. All of them gave the product four or five stars. Score 95: we started at 90 and added 5 because the owner reviews that mention it are positive.

95Positive

Gift

Two of the eight owner reviews we read mention it. All of them gave the product four or five stars. Score 95: we started at 90 and added 5 because the owner reviews that mention it are positive.

95Positive

Lid Operation

The lid operation is also mixed, with some saying it seals tightly while others find it difficult to open and close appropriately. One of the eight owner reviews we read mentions it, and that owner gave the product four or five stars, so the complaints come from the wider group of buyers. 14% of all ratings are three stars or fewer, which is where complaints like this usually sit. Score 84: we sta…

Read the full note (451 characters)

The lid operation is also mixed, with some saying it seals tightly while others find it difficult to open and close appropriately. One of the eight owner reviews we read mentions it, and that owner gave the product four or five stars, so the complaints come from the wider group of buyers. 14% of all ratings are three stars or fewer, which is where complaints like this usually sit. Score 84: we started at 90 and took off 6 because opinion is split.

84Mixed

Size

TOMLFF lists the capacity as 280 Milliliters and the product dimensions as 2.8"W x 7.32"H. Six of the eight owner reviews we read mention it. Five gave the product four or five stars and one gave it three or fewer. 14% of all ratings are three stars or fewer, which is where complaints like this usually sit. Score 78: we started at 90 and took off 12 because it draws mostly complaints.

78Needs Improvement

Capacity

TOMLFF lists the capacity as 280 Milliliters and the size as 9.5 Ounces. One of the eight owner reviews we read mentions it, and that owner gave the product four or five stars, so the complaints come from the wider group of buyers. None of the reviews we read say what goes wrong, so this score rests on the buyer ratings. 14% of all ratings are three stars or fewer, which is where complaints like t…

Read the full note (495 characters)

TOMLFF lists the capacity as 280 Milliliters and the size as 9.5 Ounces. One of the eight owner reviews we read mentions it, and that owner gave the product four or five stars, so the complaints come from the wider group of buyers. None of the reviews we read say what goes wrong, so this score rests on the buyer ratings. 14% of all ratings are three stars or fewer, which is where complaints like this usually sit. Score 78: we started at 90 and took off 12 because it draws mostly complaints.

78Needs Improvement

Owner Satisfaction

72% of ratings are five stars and 14% are four. 9% are three stars and 5% are one or two. Very few ratings land that low. One of the eight owner reviews we read gave it three stars or fewer. We look for the critical ones on purpose. Score 90: its 4.5 star average on a 100 point scale.

90Positive

Specifications

Size and weight

Capacity
280 Milliliters
Product Dimensions
2.8"W x 7.32"H
Item Dimensions LxWxH
2.79 x 2.79 x 7.32 inches
Item Package Dimensions L x W x H
7.68 x 3.03 x 2.91 inches
Item Weight
0.66 Pounds

Materials and warranty

Material
Stainless Steel

What Buyers Say

Appearance is the runaway favourite, and many are bought as gifts for penguin lovers and children. Build quality and temperature retention are both well regarded, with drinks staying hot or cold for hours and the flask surviving drops and daily knocks. The lid divides opinion: some find it seals tightly and turns easily, others find it awkward to open and close. Size and capacity are the clear negatives, with many surprised by how small it is.

Based on 4,905 Amazon customer ratings, averaging 4.5 out of 5, recorded 27 September 2026. See the reviews on Amazon

5 stars 72%
4 stars 14%
3 stars 9%
2 stars 2%
1 stars 3%
★★★★★

Awesomely portable, durable, super fairly priced, and cute

Was perfect for what I was looking for. Small enough to fit in a large coat pocket or bring around in a small work bag. Durable enough to handle falls and public transit situations. Maintain… Read it on Amazon
alyssa orlando · April 26, 2024 · Verified
★★★★★

Exactly what we needed

My son adores penguins, he had found one similar to this at a zoo gift shop an hour from home, the head on that one stopped lining up correctly after 4 months, he grew upset every time he’d … Read it on Amazon
Jessica · June 30, 2024 · Verified
★★★★★

ADORABLE

I went into this knowing it is small its more of a kids thermos but man is it cute, I got it for my mother who loves penguins for mothers day and she is obsessed with it. Its a good coffe th… Read it on Amazon
Summer · June 7, 2024 · Verified
★★★★★

So cute! Daughter loves it!

Small, cute, and insulated and easy to throw into a backpack. I like that the lid is a little larger so that it doesn’t get lost.
ACD · January 8, 2026 · Verified
★★★★★

Cute

My wife loves. Cute and keeps her drinks warm and cold. She wishes for a larger size.
Dave · January 14, 2026 · Verified
★★★★★

Great thermos

Very cute. Would buy again.
Debra Galarza · July 15, 2026 · Verified

Setting It Up

  1. Wash before first use

    Wash the flask and lid by hand in warm soapy water to remove any factory smell, then rinse and dry.

  2. Seat the silicone ring

    Check the sealing ring sits flat in the lid before each use; a twisted ring causes leaks and a stiff cap.

  3. Preheat or prechill

    Swirl hot or cold water inside for a minute, pour it out, then fill with your drink.

  4. Screw the head on firmly

    Turn the penguin's head until it is snug and lined up. A firm seal matters most for keeping heat in.

Common Questions

How much does the penguin tumbler hold?

280 ml, about 9.5 oz. That is a small coffee or a cup of tea, so it is smaller than most travel mugs.

Does it keep drinks hot and cold?

Yes. It is a double-walled vacuum flask, and temperature retention is one of its strongest points, with drinks staying hot or cold for hours.

Is it leak-proof?

The screw lid has a silicone sealing ring and is designed not to leak even on its side. Keep the ring seated flat and screw the lid on firmly.

Can it go in the dishwasher?

No. TOMLFF says hand wash only and not dishwasher safe, which protects the painted finish and the vacuum seal.

Is it suitable for children?

Yes. The size suits a child's drink, the outside stays cool with hot contents, and the finish survives drops well.

Will it fit a car cup holder?

TOMLFF says it fits most car drink holders. It measures 2.8 inches wide, so check yours if it is unusually narrow.

The Verdict

4.3Out of 5

This penguin is easy to love. It is a genuine double-walled vacuum flask with a 304 stainless steel interior, it keeps drinks hot or cold for hours, the rubberised finish shrugs off drops, and the design wins over almost everyone who sees it. Its size is the catch. At 280 ml it holds a small coffee or a child's drink, and size is by far the most common complaint, so it suits children, gifts and short trips rather than a commute. The lid can be stiff, which a clean, properly seated silicone ring helps, and it needs hand washing. If the recipient loves penguins and a small drink is enough, it is a well-made, cheerful choice.

Who should buy it

  • Penguin lovers of any age
  • Parents looking for a small insulated flask for a child.
  • Anyone who wants a pocket-sized flask for a short trip.
  • Gift buyers who want something both cute and useful.

Who should skip it

  • Commuters who need a full-size travel mug.
  • Anyone who wants a dishwasher-safe flask.
  • People who find stiff screw lids difficult to turn.

A charming, well-insulated penguin flask for small drinks; check that 280 ml is enough before you buy.

Check price on Amazon

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