Nuby 3 in 1 Baby Bottle to Training Sippy Cup
- Bottle
- 8 ounces
- 1
- 4.2 ounces
- More reviewed than 80%
At an 8-ounce capacity with a 4.6 rating from 4,000 reviews, this convertible bottle suits parents planning ahead for the sippy cup transition.
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How it ranks among the 276 bottles we track
4.6★ across 4,000 Amazon ratings, Bayesian-smoothed toward the category average.
4,000 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
300+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 276 bottles we track - how the scorecard works · full bottles data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
This Nuby bottle converts through three stages, from a standard baby bottle into a training sippy cup, in an 8-ounce, single-pack size weighing 4.16 ounces.
The 3-in-1 design is meant to grow with a baby past the bottle stage without buying a separate sippy cup later, converting rather than replacing. At 8 ounces it covers larger feedings than a newborn-sized bottle, better suited to babies further along in bottle feeding.
- 3 in 1 bottle to sippy cup
- 8 ounce capacity
- 4.16 ounce item weight
- Single pack
Who it's for
Parents who want one product to carry a baby from bottle feeding into sippy cup use, cutting down on separate purchases later. Families who prefer dedicated bottles and cups for each stage may not need the conversion feature.
Strengths and trade-offs
Drawn from this product's published specifications.
- Converts from bottle to sippy cup, cutting down on separate purchases
- 8 ounce capacity fits larger feedings
- Lightweight at 4.16 ounces
- Sold as a single unit rather than a multi-pack
Performance notes
The 3-in-1 conversion is the feature that matters here, letting the same 8-ounce vessel serve as a bottle first and a training cup later rather than requiring a new purchase at each stage. At 4.16 ounces, it's light for daily handling and packing in a diaper bag.
Specifications
| Brand | Nuby |
|---|---|
| Capacity | 8 ounces |
| Pack Count | 1 |
| Item Weight | 4.2 ounces |
| Age Range | Baby |
Other Nuby bottles
How it compares
This product against the closest alternatives we track in bottles.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Nuby 3 in 1 Baby Bottle to Training Sippy CupThis product | 4.6 / 5 | 4,000 | 4.4 / 5 |
| Lansinoh 60044677203700 BottleLansinoh | 4.8 / 5 | 52,400 | 4.7 / 5 |
| Dr. Brown's Natural Flow Anti-Colic Options+ Narrow Baby BottleDr | 4.8 / 5 | 52,000 | 4.7 / 5 |
| Philips SCY903/04 BottlePhilips | 4.8 / 5 | 25,000 | 4.7 / 5 |
| Medela 87095 BottleMedela | 4.8 / 5 | 15,100 | 4.7 / 5 |
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Questions about the Nuby bottles
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How does the 3-in-1 conversion work?
It's built to transition from a standard baby bottle into a training sippy cup as your baby grows, rather than requiring separate products.
What's the capacity?
8 ounces.
Does it come as a multi-pack?
No, this listing is for a single unit.