Mytum
The reusable insulated tumbler that's leak-proof and goes everywhere with you. It keeps drinks hot or cold, cleans in a moment, and is made with safe, non-toxic materials.
- Airtight lid with a silicone gasket: it won't leak, even in your backpack
- Double-wall thermal insulation: hot or cold drinks for hours
- Wide mouth: easy to fill, easy to drink from, easy to clean all the way down
- Safe, non-toxic materials, BPA-free
- Light, easy-to-handle design made for every day out
Create your Mytum
Pick the body color and the cap color and watch the live preview: over 400 combinations for a bottle that's truly yours. Found your favorite combination? Add it to the notes on your order.
Turn it upside down — it won't leak
Mytum's lid closes with an airtight seal and a non-toxic silicone gasket. Drop it in your backpack, your bag or your suitcase: no more fear of stains or spilled liquids.
- A precise-closing thread for a clean, stable screw-on
- A silicone gasket that blocks leaks even upside down
- Reliable seal with both sparkling drinks and hot liquids
- The gasket removes and washes separately: always hygienic
Note: for hot drinks, open the lid carefully to let the internal pressure release.
Hot for longer, cold for longer
The double-wall vacuum insulation structure keeps your drink at temperature for hours: hot coffee in the morning, fresh water all afternoon.
An ordinary bottle
Single-walled: the heat escapes and the cold fades away in no time.
Mytum
Insulated double wall: the temperature stays stable for a long time, with no condensation on the outside.
Wide mouth, easy to clean
The wide mouth makes everything simpler: filling, adding ice, drinking and — above all — washing thoroughly, reaching every corner with a brush.
Wide opening
Comfortable to fill, and ice cubes fit right in.
No hard-to-reach corners
The brush reaches all the way down: no residue, no bad odors.
Detachable parts
The lid and gasket come apart and wash individually.
Safe materials, every sip worry-free
Mytum uses food-grade stainless steel for the body and non-toxic silicone for the gaskets. BPA-free: no release of unwanted substances, no plastic taste.
Why choose Mytum
Looking for the perfect everyday bottle? Here it is.
Single-use bottles
Convenient but wasteful: trash every day and zero thermal performance.
A plastic bottle
Light, but with a plastic taste and no insulation.
A cheap tumbler
Often leaks, barely insulates, and has corners that are hard to clean.
Mytum
Leak-proof, insulating, easy to clean and non-toxic: all in one.
Made for your day out
Light, easy to handle, with clean lines: Mytum slips into your backpack's bottle pocket, your car's cup holder and your everyday bag.
Always with you
Office, gym, school or travel: made to keep you company all day long.
Comfortable grip
A body with an easy-to-handle diameter, simple to hold and to store.
Reusable and sustainable
One bottle to replace hundreds of single-use ones: less waste, more style.
Key features
Technical sheet
| Material | Food-grade stainless steel (body) + non-toxic silicone (gasket) · BPA-free |
|---|---|
| Capacity | Day-out format, ideal for water, coffee, tea and cold drinks |
| Insulation | Double wall with vacuum insulation: keeps hot and cold for a long time |
| Lid | Airtight with removable silicone gasket, leak-proof |
| Opening | Wide mouth: easy to fill, to drink from and to clean |
| Washing | Hand washing recommended; detachable parts (lid + gasket) |
Usage compatibility
| Hot drinks | ✅ Yes — open the lid carefully to let the pressure release. |
|---|---|
| Cold drinks / ice | ✅ Yes — the wide mouth lets you drop in ice cubes. |
| Sparkling drinks | ⚠️ Possible, but open slowly: the gas builds up internal pressure. |
| Dishwasher | ⚠️ Hand washing is recommended to preserve the insulation and gasket. |
| Microwave | ❌ No: the body is stainless steel. |
| Freezer | ❌ No: do not freeze with liquids inside. |
To make it last
- Wash the product before first use.
- Take apart the lid and remove the silicone gasket to clean them thoroughly.
- Use a brush to reach the bottom, thanks to the wide mouth.
- Dry all parts completely before closing and storing.
- Screw the lid back on firmly to ensure the leak-proof seal.
- Open carefully after pouring hot or sparkling drinks.
- Avoid hard impacts and drops, which can damage the insulation.
- Do not use in the microwave, oven or freezer.
Information
| Name | Mytum |
|---|---|
| Type | Reusable insulated bottle / tumbler |
| Material | Food-grade stainless steel + non-toxic silicone · BPA-free |
| Origin | South Korea |
| Warranty | Within 14 days of receipt (product defects) |
| Shipping | Tracked international EMS from Korea |
| Payment | PayPal link, sent after the order |