The Memobottle Stainless Steel is a flat, paper-sized water bottle made of food-safe 304 stainless steel, available in four sizes ranging from 250 to 1,080 milliliters. It is leak-proof, heat- and freeze-resistant, has a satin-finish powder coating, and is not insulated. This guide explains how it differs from the original Memobottle made of Tritan, which size fits in which bag, and what you need to keep in mind when caring for and filling it.
Stainless Steel or Tritan: How It Differs from the Original Memobottle
The shape is the same, but the material is not. The original Memobottle is made of Tritan, a BPA-free plastic that is lightweight and translucent. The stainless steel version has a body made of 304 stainless steel with a satin-finished powder coating, a lid made of BPA- and BPS-free plastic, and a seal made of food-safe silicone. It is heavier, opaque, and significantly more resistant to scratches and impacts. You can read about where Memobottle comes from and why the bottle is flat in the profile “The Bottle That Fits in Any Bag.”
Two details are designed differently in the stainless steel version. First, the opening: it’s 28 millimeters in diameter, so you can fill it quickly under the faucet and take big sips. Second, the thread: it’s on the inside instead of the outside. When drinking, your lips touch smooth steel instead of a thread, and the drinking surface is covered when the lid is closed, keeping it clean. Anyone familiar with the Tritan version will notice the difference with the very first sip.
What the stainless steel Memobottle is not: a thermos. It has a single wall and no vacuum insulation. Hot tea doesn’t stay hot for hours, and the outside of the bottle gets warm. But it’s slimmer and lighter than any double-walled bottle of the same volume, and that’s exactly what this design is all about.
Memobottle Stainless Steel: A Comparison of Sizes
Four sizes, all 37 to 39 millimeters thick. The number in the name corresponds to the paper size on which the surface is based.
| Model | Volume | Dimensions (H × W × D) | Empty weight | Fits in |
|---|---|---|---|---|
| A7 Stainless Steel | 250 ml | 138 × 74 × 37 mm | 230 g | Jacket pocket, pants pocket, small handbag |
| A6 Stainless Steel | 500 ml | 181 × 105 × 37 mm | 320 g | Handbag, shoulder bag, backpack |
| Slim Stainless Steel | 600 ml | 268 × 80 × 37 mm | 365 g | Side pocket in a backpack, cup holder in a car |
| A5 Stainless Steel | 1080 ml | 243 × 148 × 39 mm | 465 g | Laptop compartment in a backpack, briefcase |
Rule of thumb: The A6 is the size for everyday use, the A5 for a full day without refilling, the A7 for the commute to the office or an evening out, and the Slim for anyone who prefers a tall, narrow bottle to a flat, wide one. The colors are the same for all four sizes: black, white, pistachio, rosé, butter yellow, red, and powder blue.
Memobottle A6 Stainless Steel: 500 ml for your purse
The Memobottle A6 Stainless Steel is the model most people end up choosing. It holds 500 milliliters in a body measuring 181 by 105 millimeters—about the size of a paperback book. It lies flat in your purse next to your wallet, in your backpack next to your notebook, and doesn’t stick out anywhere. It weighs 320 grams when empty and a good 800 grams when filled with water—you can carry it all day without it getting in the way.
Memobottle A6 Edelstahl
Die Memobottle A6 Edelstahl fasst 500 ml und passt dank ihres flachen, papierformatähnlichen Designs perfekt in jede Tasche. Auslaufsicher, hitze-…
Memobottle Slim Stainless Steel: 600 ml, tall and slim
The Memobottle Slim Stainless Steel flips the concept on its head: instead of being flat and wide, it’s flat and tall—268 millimeters high and 80 millimeters wide. This means it fits in a backpack’s side pocket, in a car’s cup holder, and in the narrow space between a laptop and the side of a bag. 600 milliliters is enough for half a workday, and because it’s tall, you can always grab it right by the handle when it’s in your backpack.
Memobottle Slim Edelstahl
Die Memobottle Slim aus Edelstahl fasst 600 ml und überzeugt mit ihrer eleganten, schlanken Form. Auslaufsicher, robust und temperaturbeständig –…
A5 and A7 Stainless Steel: The Largest and the Smallest
The Memobottle A5 Stainless Steel holds 1,080 milliliters—more than a liter—in a bottle that’s just 39 millimeters thick. It fits flat in the laptop compartment of a backpack next to a 15-inch device and replaces two smaller bottles. Weighing 465 grams when empty and about 1.5 kilograms when full, it’s the perfect choice for long days, college, and travel.
At the other end of the spectrum is the Memobottle A7 Stainless Steel with a 250-milliliter capacity: 138 by 74 millimeters, 230 grams—the size of a large smartphone. It fits in the inside pocket of a blazer or the back pocket of a pair of jeans—perfect for the commute to work, a trip to a restaurant, or a walk. Both sizes are available in the same seven colors as the A6 and Slim models.
The holder that keeps the bottle upright
A flat bottle won’t stand upright on its own. The Memobottle Universal Holder, made of powder-coated steel, accommodates any Memobottle—whether stainless steel or Tritan, with or without a silicone sleeve—and keeps it upright on a desk, nightstand, or shelf. Important when purchasing: The older Original Holder is only compatible with the Tritan models, not with the stainless steel bottles. For the stainless steel Memobottle, you’ll need the Universal Holder.
Memobottle Halter Universal
Schreibtischständer aus pulverbeschichtetem Stahl für die ganze Memobottle-Kollektion: Edelstahl, Titan und Original, mit oder ohne Silikonhülle. Hält die Flasche aufrecht…
Care, Filling, and What Not to Put Inside
Memobottle recommends washing the stainless steel bottle by hand: mix one part vinegar with four parts warm water, shake, let it sit, then rinse thoroughly. The lid and silicone gasket are replaceable; the bottle is built to last for years, not just one season. Hot drinks are fine, cold ones too, and you can even freeze it. Just keep hot contents in mind: The bottle isn’t insulated, so the outside gets as warm as the tea inside.
According to Memobottle, carbonated beverages are not suitable for any of the models—neither the stainless steel nor the Tritan ones. Still water, tea, coffee, juice: all are fine.
What Every Bottle Sold Accomplishes
Memobottle is a certified B Corporation. For every bottle sold, the brand partners with Water.org to provide five months of clean drinking water to someone who would otherwise lack access to it. According to the company, this has resulted in over 50 million days of clean water to date. This applies to every stainless-steel Memobottle sold by One Horizon, just as it does to orders placed directly in Melbourne.
Frequently Asked Questions About the Memobottle Stainless Steel
Is the Memobottle stainless steel bottle insulated?
No. The Memobottle Stainless Steel is single-walled and not vacuum-insulated. You can use it for both hot and cold drinks, but it won’t keep them at the same temperature for hours, and the outside of the bottle will get warm if it contains a hot beverage. On the other hand, it’s thinner and lighter than any double-walled bottle of the same volume.
Which size of the Memobottle stainless steel bottle fits in a handbag?
The A6 Stainless Steel, with a capacity of 500 ml (181 × 105 × 37 mm), is the perfect size for your purse and everyday use. The A7, with a 250 ml capacity, fits in small bags or a jacket pocket, while the A5, with a 1080 ml capacity, is ideal for a backpack. The Slim, with a 600 ml capacity, is tall and narrow and fits in a side pocket or a cup holder.
What material is the Memobottle Stainless Steel made of?
The body is made of food-safe 304 stainless steel with a satin-finish powder coating; the lid is made of BPA- and BPS-free plastic; and the gasket is made of food-safe silicone. The thread is on the inside, so your lips come into contact with smooth steel when you drink.
How do you clean the Memobottle stainless steel bottle?
Memobottle recommends hand-washing with a mixture of one part vinegar to four parts warm water: shake, let it sit, then rinse thoroughly. This will keep the powder coating looking great for a long time. The lid and gasket can be replaced if necessary.
Does the Memobottle holder fit the stainless steel bottle?
Only the Memobottle Universal Holder is compatible with the stainless steel models A5, A6, A7, and Slim, with or without a silicone sleeve. The Original Holder is designed exclusively for Tritan bottles.
Can I put carbonated drinks in the Memobottle stainless steel bottle?
No. According to Memobottle, carbonated beverages are not suitable for any of its models. The Memobottle is designed for still water, tea, coffee, and juice—whether hot or cold.
The bottle that still looks brand-new after two years
A Tritan Memobottle will develop fine scratches over time—that’s just the nature of plastic. The stainless steel version can withstand bumps, keys, and the bottom of a backpack without showing a scratch, and the lid can be replaced if it wears out after years of use. If you can’t decide, start with the A6 stainless steel in black. It’s the size that fits in almost any bag, and the color that goes with everything.
