Stenviax
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Stenviax Portable Bottle Warmer Pro

Cordless. It warms the milk itself, then pours into your own bottle.

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$69.90

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70 s
4 oz breast milk to 98 °F
7 temperatures
Milk and water
14,000 mAh battery
Charges over USB-C

Measured from refrigerator temperature at a full charge.

What it does

The Silk Beige warmer standing on the grass beside a park path under spring blossom, milk warming in its see-through chamber, the display reading 98 °F
Milk warms, then pours92 · 95 · 98 °F
The warmer heating water on a nursery table beside a folded blanket
Water for mixing formula98 · 104 · 110 · 122 °F
The Silk Beige warmer running its clean cycle on a nursery table, steam rising, a bottle of milk and a pacifier beside it
Cleans its own chamber149 °F for 20 minutes
The Silk Beige warmer with its lid flipped open, showing the seal inside the lid, the pour spout and the lock slider
The lock slider on the Silk Beige warmer's lid, marked with an open and a closed padlock
Locks shut, opens with one thumbBPA-free lid
A pacifier sitting inside the Silk Beige warmer's open steel chamber, steam rising from it
Sterilizes a pacifier too149 °F for 20 minutes

Three steps to a warm feed

  1. The Silk Beige warmer with its lid flipped open, showing the seal inside the lid, the pour spout and the lock slider

    Fill

    Slide the lock, lift the lid and pour in up to 17 oz.

  2. Stenviax Portable Bottle Warmer Pro in Silk Beige, closed, with the display lit at 104 °F

    Choose

    Switch it on, then press milk or water for one of 7 temperatures.

  3. A hand tipping the Silk Beige warmer, its lid flipped open, to pour warm milk into a baby bottle

    Pour

    Two beeps mean it is ready. Pour into your own bottle.

From breakfast to 3 a.m.

  • A mother holding her smiling baby while spooning formula into a bottle, the Silk Beige warmer on the kitchen counter beside her
    In the kitchen
  • A mother walking a pram through spring blossom, the Silk Beige warmer in the handle's cup holder
    Out for a walk
  • A father hiking with a laughing baby in a carrier, the Silk Beige warmer riding in the pack's side pocket with its display lit through the pocket
    On the trail
  • A parent lifting the warmer from the passenger seat, a baby laughing in the car seat behind
    In the car
  • A mother cradling her sleeping newborn in a nursery armchair by lamplight, the Silk Beige warmer and a bottle of milk on the side table beside her
    At 3 a.m.

A gift for the first nights

For a new mom or a mom-to-be. Warm milk at every feed, without the trip to the kitchen.

You hold the love. We hold the warmth.

Give it as a gift
A mother smiling down at the newborn in her arms beside a gift table, a ribboned warmer carton tagged Welcome Baby and a card reading You hold the love. We hold the warmth.
The Stenviax warmer's carton tied with a pink satin bow and a tag reading For a New Mom, roses and a crib beside it
A table of baby shower gifts: wrapped boxes, congratulations cards, a vase of roses, plush toys and a basket of baby things on a knitted blanket

Easy to keep clean

Rinse it after a feed, then stand it upside down to dry.

  • A hand holding the Silk Beige warmer while a silicone brush cleans its chamber, with close views of the lid seal and the opened lid being rinsed
    1Rinse out
  • Two hands drying the inside of the Silk Beige warmer's steel chamber with a cloth
    2Wipe dry
  • The Silk Beige warmer standing upside down on a drying tray beside its opened lid and silicone seal
    3Air dry

Five things in the box

The fast charger and both guides come with it.

The Silk Beige warmer standing on a white marble plinth beside its retail carton, a braided USB-C charging cable coiled on the step below
Size and weight: 10 in tall · 3.4 in wide · 1.8 lb
  1. The warmer17 oz chamber, 14,000 mAh battery.
  2. 45 W PD fast-charging adapterEmpty to full in about 50 minutes with the braided cable.
  3. Braided high-speed USB-C cableCharges the warmer over USB-C.
  4. User manualSettings, care and troubleshooting.
  5. Quick start guideThe 7 settings at a glance.

Specifications at a glance

70 s
4 oz breast milk to 98 °F
2 min
6 oz water to 110 °F
7 temperatures
Milk and water
17 oz chamber
500 ml
14,000 mAh battery
Charges over USB-C
50 min
Empty to full

Measured from refrigerator temperature at a full charge.

All specifications

What it holds

Capacity
17 oz / 500 ml
Dimensions
10 × 3.4 in
Weight
1.8 lb
Chamber material
Food-grade 316L stainless steel
Lid material
BPA-free
Empty-chamber protection
Yes, stops and shows E2
Finishes
Luxe White, Silk Beige

How fast it warms

Measured from refrigerator temperature at a full charge.

Breast milk, 4 oz to 98 °F
About 70 seconds
Water, 6 oz to 110 °F
About 2 minutes
Milk modes
92 · 95 · 98 °F
Water modes
98 · 104 · 110 · 122 °F
Pasteurisation
149 °F for 20 minutes
Operating range
92–122 °F / 33–50 °C

How it is powered

With the 45 W PD adapter and braided USB-C cable in the box.

Battery
14,000 mAh
Charge time
About 50 minutes, 0 to 100%
Charger in the box
45 W PD fast-charging adapter
Charging input
5 V / 3 A over USB-C
Heating power
120 W
Working voltage
14.8 V
Standby
Up to 48 hours

Tested and certified

Independently lab-tested for electromagnetic compatibility and electrical safety. It passed.

Tested to EN 55014-1:2017+A11:2021, EN IEC 55014-2:2021, EN 61000-3-3:2013/A2:2021/AC:2022-01, EN IEC 61000-3-2:2019/A2:2024, EN 60335-1:2023/A11:2023 and EN 60335-2-15:2016/A2:2021. In line with the Low Voltage Directive 2014/35/EU and EMC Directive 2014/30/EU.

An EMC test report and a certificate of conformity in gold frames, a magnifier over the report reading Test Result: Pass, beside the Luxe White and Silk Beige warmers
  • EMC tested
  • Electrical safety tested
  • Result: pass

Questions, answered

More on the support page.

About 70 seconds for 4 oz of breast milk to 98 °F, and about 2 minutes for 6 oz of water to 110 °F. Both times are measured from refrigerator temperature at a full charge.

Both. Choose a milk mode at 92, 95 or 98 °F for breast milk, which the manual caps at 98 °F. Choose a water mode between 98 and 122 °F to heat the water you mix formula into.

Your bottle never has to fit: none goes inside. The 17 oz chamber warms the milk itself and you pour it into your own bottle, whatever its shape.

About 50 minutes from empty to full, on the 45 W PD adapter and the braided USB-C cable that come in the box. The warmer takes 5 V at 3 A over USB-C, and a different adapter will still charge it.

Pressing the milk and water buttons together starts pasteurisation at 149 °F for 20 minutes. It runs on the chamber itself and on anything small enough to sit inside it, and the pasteurisation symbol stays lit until the 20 minutes are up.

Rinse the chamber and the lid with clean or mildly soapy water as soon as you have poured, then separate the lid and the silicone parts and stand the warmer upside down to drain. It never goes in water and never goes in a dishwasher, so the buttons and the charging port are wiped with a damp cloth instead.

It stops and shows E2 instead of heating. Pour milk or water in and the code clears on its own.

The heating chamber is food-grade 316L stainless steel and has passed food safety testing. The lid is BPA-free.

Stories

All stories
A mother in a cream sweater cradling her sleeping newborn, with a ribboned Welcome Baby gift box and a small card on the table

Gifts for new moms: thoughtful ideas for the first weeks

Gifts for new moms that help in the first weeks: rest, warm meals, time back, care just for her, and calm night feeds with the Stenviax Bottle Warmer Pro.

Gifting6 min read

A mother in a nursery armchair holding her sleeping newborn, with a Silk Beige Stenviax warmer and a bottle on the side table under a lamp

Newborn night feeding tips for calmer 3 a.m. feeds

Newborn night feeding tips for calm, short 3 a.m. feeds: reading early hunger cues, keeping the room dim and quiet, and settling your baby back to sleep safely.

Night feeds7 min read

The Stenviax warmer's carton tied with a pink ribbon and a For a New Mom tag, beside roses and a crib

Practical baby shower gifts parents will use every day

Practical baby shower gifts new parents reach for every day, from feeding and calm nights to outings, plus simple ways to make a useful gift feel special.

Gifting5 min read

Bring home the Bottle Warmer Pro

$69.90, direct from us or on Amazon.

Buy on Amazon
Silk Beige warmer lying on its side with the lid open and the strap in frame