Home › Reviews › Feeding › Nuby RapidCool
Parent-tested review
Nuby RapidCool Review
4.6
Cassius Finds rating
A fast, reusable formula-cooling flask that helps bring freshly prepared feeds down to serving temperature in minutes—especially useful at night or away from home.
Affiliate disclosure: We may earn a commission at no extra cost to you.
Pros
✓
Cools fresh formula in 2–5 minutes
✓
Digital colour temperature indicator
✓
Portable for trips and night feeds
✓
Clear internal measuring marks
✓
No filters or mains connection
Cons
✓
Costs more than a standard flask
✓
Must be cleaned after every feed
✓
Lid needs separate sterilising care
✓
Feed still needs a wrist-temperature check
♕
Our verdict
A genuinely useful time-saver for formula-feeding families, especially for night feeds and trips. Fast cooling and a clear temperature indicator make it a strong 4.6 pick.
4.6
Overall score
Key features and what they mean ✦
The useful details, translated into everyday family life.
✦
Heat-absorbing flask walls
Specialist materials inside the flask walls absorb heat to cool a freshly prepared feed quickly.
◷
Ready in minutes
Cooling normally takes around 2–5 minutes, depending on the size of the feed.
▤
90–240ml feed sizes
Internal measuring marks support feeds from 90ml to 240ml (3oz to 8oz).
⌂
Colour temperature guide
The digital lid shows amber while the feed is warm and changes to green when cooled.
◎
Portable by design
Compact and filter-free, with no mains connection needed during use.
✓
Cleaning accessories
A lid-cleaning brush is included; the digital lid needs separate sterilising care.
Our family test
A calmer way to handle hungry-baby feeds
The biggest benefit is how much waiting it removes from a stressful feed. Add freshly boiled water and measured formula, mix as directed, then watch the lid change from amber to green as the feed cools.
It proved especially useful for night feeds and days out, when running a bottle under cold water is awkward. It still needs a thorough cleaning routine, and the final formula temperature should always be checked on the inside of your wrist.
For our family, the value is convenience rather than novelty: fewer improvised cooling methods, a clearer temperature cue and a portable solution that fits into the changing bag.
Who is it for?
✓ Formula-feeding parents preparing fresh feeds
✓ Families managing frequent night feeds
✓ Parents who regularly feed away from home
✓ Anyone wanting a faster alternative to a cold-water bath
Things to consider
• Higher purchase price than a standard flask
• Must be cleaned thoroughly after every feed
• The digital lid needs separate sterilising care
• Always check the finished feed temperature before serving
Frequently asked questions ✧
How long does the Nuby RapidCool take?
Nuby says cooling normally takes around 2–5 minutes, depending on the size of the feed.
What feed sizes does it support?
The current Nuby model is designed for feeds from 90ml to 240ml (3oz to 8oz).
How does the temperature display work?
The digital lid shows amber while the feed is warm and turns green when it has cooled. Always check the formula on the inside of your wrist before feeding.
Does it need electricity or replacement filters?
No mains connection or replacement filter is needed; the RapidCool works through heat-absorbing materials inside the flask walls.
How should the digital lid be cleaned?
Follow Nuby’s cleaning instructions. The lid should be cleaned carefully and then sterilised using UV or cold-water sterilisation as directed by the manufacturer.
Ready to make formula feeds less frantic?
Check the latest price and availability on Amazon.
Affiliate link · we may earn a commission at no extra cost to you.
Made with care • Built for parents
