USB Portable Bottle Warmer Bag
USB Portable Bottle Warmer Bag
Warm milk on the road without hunting for hot water or an outlet.
- USB powered: power bank or car port
- Three heat settings, starting at 104°F
- Wraps 4–5.4 oz bottles with hook-and-loop
Order today, ships by 2 business days
Free US shipping. Most orders arrive in 2–4 weeks. Details
- Free US shipping
- 30-day returns
- Secure checkout
A portable bottle warmer that runs on USB, so a cold bottle no longer cuts your outing short.
For road trips and long park days with no outlet or hot water nearby. This travel bottle warmer wraps the bottle, plugs in and warms one feed where you are.
- Pick a heat level — three settings, 104°F, 122°F and 140°F, shown by a colored light
- Breast milk setting — the 104°F setting makes it a bottle warmer for breast milk
- Easy wrap fit — this portable bottle warmer wraps 4–5.4 oz bottles with hook-and-loop
- Bag-friendly — a portable milk warmer that opens flat, with a carry loop
- No hot water needed — runs from a power bank or USB adapter, or as a car bottle warmer
Details
- Material: Fabric with hook-and-loop closure
- Size: 11.8 x 5.3 in (30 x 13.5 cm) laid flat
- Fits: Bottles about 4–5.4 oz (120–160 ml)
- Power: USB; use a power bank, car USB port or USB adapter
- Colors: Choose from 4 colors: pink, black, white or blue
- Care: Unplug, wipe with a damp cloth, keep the button dry
Warms one feed at a time. Use the 104°F setting for milk, test a few drops on your wrist, use warmed milk within 2 hours, and never leave it powered and unattended.
Details
- Material
- Fabric with hook-and-loop closure
- Size
- 11.8 x 5.3 in (30 x 13.5 cm) laid flat
- Fits
- Bottles about 4–5.4 oz (120–160 ml)
- Power
- USB (power bank, car USB port or USB adapter)
- Heat settings
- 3 (104°F / 122°F / 140°F; 40 / 50 / 60°C)
- Colors
- Choose from 4 colors
What's in the box
- 1 USB bottle warmer bag
Care
Wipe the fabric with a damp cloth; keep the button and plug dry.
Do not machine wash or soak it.
Safety
Use 104°F for milk; higher settings run hotter than advised. Use warmed milk within 2 hours (CDC).
Never leave it powered and unattended or hang it on a crib; keep the cord away from baby.
Shipping & returns
Shipping: Free on every US order. Orders are prepared in 1–2 business days and most arrive within 2–4 weeks; some items can take up to 30–60 days depending on the item, your location and busy seasons. A tracking number is emailed as soon as your order ships.
Returns: Return unused items in their original packaging within 30 days of delivery. Defective, damaged or wrong items are free to return. For change-of-mind returns, a $10 return shipping fee and a $10 restocking fee are deducted from the refund. For hygiene reasons, opened items that go in the mouth or against the skin can't be returned.
Made for little days
Warm bottle, no hot water
A cold bottle, a hungry baby, and no outlet or café hot water nearby. Plug this sleeve into a power bank or car USB port and warm the bottle where you are.
Know which bottles fit
It's made for 4–5.4 oz (120–160 ml) bottles and wraps on with hook-and-loop. Larger 8–9 oz or extra-wide bottles may not close inside it.
Warm feeds on the move
Start it before you reach the rest stop or park bench. USB warming is gentle, not instant, so begin early and with room-temperature milk when you can.
Why parents choose it
The little things that matter
Color-coded heat
Green, blue or red light shows the setting at a glance.
One-button control
Hold 3 seconds for on or off; tap to change the setting.
Packs flat
Opens to 11.8 x 5.3 in and slips into a diaper bag.
Side by side
What makes it different
| Feature | Lumiwee | Typical |
|---|---|---|
| Needs hot water | No | Usually yes |
| Heat setting shown | Color light | Guesswork |
| Power source | USB or car port | Wall outlet |
| Packs flat in a bag | Bulky base |
How to use
Easy from day one
- 01
Wrap the bottle
Close the sleeve around a 4–5.4 oz bottle with the hook-and-loop strip.
- 02
Plug in and start
Connect USB power, hold the button 3 seconds, then tap for heat level.
- 03
Test, then feed
Unplug, swirl the milk and test a few drops on your wrist.
Size & fit
Dimensions
- Length (flat)
- 11.8 in (30 cm)
- Height (flat)
- 5.3 in (13.5 cm)
- Bottle capacity
- 4.1–5.4 oz (120–160 ml)
Measured by hand, so allow a small difference.
Questions
Good to know
How long does it take to warm a bottle?
It's a gentle USB warmer, not a fast heater, and time depends on the milk's starting temperature and your power source. Start early and test before feeding.
Will my bottle fit?
It's made for bottles about 4–5.4 oz (120–160 ml). Larger or very wide bottles may not close properly inside the sleeve.
Does it have a battery?
No battery is listed. Plug it into a USB power bank, a car USB port or a USB wall adapter.
Can it keep milk warm for hours?
No, use it to warm one feed at a time. The CDC advises using warmed breast milk within 2 hours.
Which setting should I use for breast milk?
Start on 104°F (green light). The 122°F and 140°F settings run hotter than advised for milk, so always test on your wrist.
How much is shipping?
Shipping is free on every order within the United States, with no minimum spend.
How long will my order take to arrive?
Orders are prepared in 1–2 business days. Most orders arrive within 2–4 weeks, and some items can take up to 30–60 days depending on the item, your location and busy seasons. Shopping for a shower or a due date? Please order early.
How do I track my order?
As soon as your order ships, we email you a tracking number. Tracking can pause for a while in transit, so a gap in updates doesn't mean your package is lost.
What is your return policy?
You can return items within 30 days of delivery if they are unused, unwashed and in their original packaging. Defective, damaged or wrong items are free to return. For change-of-mind returns, a $10 return shipping fee and a $10 restocking fee are deducted from your refund.
Is there anything I can't return?
For your baby's health and safety, we can't accept items that go in the mouth or against the skin once they've been opened, used or washed. Unopened items in sealed packaging can be returned as normal.
How can I reach Lumiwee?
Email hello@lumiwee.com and a real person will reply within 1–2 business days.