Boon Nursh Bottles - Slow Flow - Silicone Baby Bottles Review
Our verdict
The Boon Nursh Slow Flow is the newborn-focused sibling to the 8-ounce Nursh, offering the same collapsible silicone anti-colic design in a 4-ounce size with a slow-flow nipple. The 4.6-star rating from 8,307 ratings reflects very broad satisfaction at the starting stage of a baby's bottle journey.
Check price on AmazonBest for
Newborns and very young infants whose parents want a slow-flow silicone anti-colic bottle that is simple to clean and supports a natural feeding rhythm.
Skip if
Parents of older infants who have outgrown the slow-flow stage, or those who need a larger capacity than 4 ounces per feed.
- Age Range Newborn
- Weight 0.21 Pounds
- Capacity 4 ounces
- Pack Count 12.0 Ounce
- Priced 19% above the category median ($16.85 across 276 tracked models)
Our scorecard
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Owner rating4.6/5
4.6 average across 8,307 owner ratings
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Popularity4.5/5
8,307 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other baby gear and nursery essentials we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
The Boon Nursh Slow Flow is designed for the newborn stage, pairing the brand's collapsible silicone pouch with a slow-flow nipple that limits milk output to match the pace of a young infant's developing suck-swallow-breathe pattern. The 4-ounce capacity is right-sized for newborns, whose stomach capacity is small and feeds are frequent.
The anti-colic mechanism is identical to the larger Nursh: as the baby drinks, the silicone pouch collapses inward rather than allowing air to enter the bottle. This keeps air out of the milk stream without requiring a separate vent insert or tube, which simplifies cleaning considerably. Parents building a newborn feeding kit often start with the slow-flow 4-ounce and graduate to the 8-ounce medium or fast-flow version as the baby grows.
At $19.99, the Nursh Slow Flow is priced at the mid-to-upper end for a single 4-ounce bottle, reflecting the premium silicone material and the brand's anti-colic design. With 8,307 ratings at 4.6 stars and 400 monthly purchases, it sits just below the extraordinary volume of the larger Nursh but still delivers a well-validated rating.
Pros
- 4.6 stars from 8,307 ratings is a strong, well-supported result for a newborn bottle
- Slow-flow nipple is appropriate for the feeding pace of newborns from birth
- Collapsible silicone pouch reduces air ingestion without a separate vent tube to clean
- 4-ounce size is appropriately matched to newborn stomach capacity and early feed volumes
Cons
- $19.99 for a single 4-ounce bottle is higher per-unit than budget alternatives
- The small 4-ounce capacity means parents will need larger bottles within a few months as feed volumes grow
- Collapsible pouch requires a small technique adjustment when filling compared to a rigid-body bottle
- 400 monthly purchases is moderate, suggesting parents spread purchases across the Nursh line rather than concentrating on this size
Specifications
| Age Range | Newborn |
|---|---|
| Weight | 0.21 Pounds |
| Capacity | 4 ounces |
| Pack Count | 12.0 Ounce |
Performance notes
The silicone body of the Nursh Slow Flow is soft and lightweight, which some parents report makes newborns more accepting of it compared to rigid bottles. The slow-flow nipple is designed to prevent the fast milk delivery that can overwhelm newborns and cause gulping, gagging, or excess air swallowing. Owner reviews at this listing describe it as a solid option for establishing an early bottle routine with breastfed newborns. Cleaning is simpler than internal-vent designs because the pouch can be fully inverted for rinsing.
What buyers say
With 8,307 ratings at 4.6 stars and 400 monthly purchases, the Nursh Slow Flow has a well-established positive reputation. Reviewers frequently describe it as a first bottle that newborns accept, particularly those who also breastfeed. A small portion of negative reviews come from parents who moved to this bottle hoping it would resolve severe reflux and found that colic had a different underlying cause, which is not a product defect. Overall sentiment is positive and consistent.
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Frequently asked questions
When should I move from the slow-flow to a faster nipple?
Slow-flow nipples are typically appropriate for the first 2 to 3 months. Signs a baby is ready for a faster flow include taking much longer than usual to finish a feed, getting frustrated mid-bottle, or repeatedly pulling off the nipple. Boon sells faster-flow nipples compatible with the Nursh bottle as the baby grows.
Is this bottle suitable for expressed breast milk as well as formula?
Yes, most standard baby bottles including the Boon Nursh are suitable for both expressed breast milk and prepared formula. The silicone is food-safe and the bottle can be sterilized between uses, which is standard practice regardless of the liquid being fed.
Who do I contact with questions about this product?
Reach the BabyCareShop team at [email protected] and we are glad to help.