# Dr\. Brown's wide\-neck nipple flow rate by baby's age

Which Dr\. Brown's wide\-neck bottle nipple flow rate suits a baby's age?

Dr\. Brown's Natural Flow Wide\-Neck Baby Bottle Silicone Nipple, Level Preemie \(WN1600\): The Preemie Flow wide\-neck nipple is the slowest\-flow nipple, meant for premature and breastfed newborns\. There are six nipple flow levels, from 0m\+ to 9m\+ and for thicker liquids, and baby's preferred flow rate may differ from the suggested age range\. Dr\. Brown's Natural Flow Wide\-Neck Baby Bottle Silicone Nipple \(sold by albeebaby\.com\): Level 4 nipples\. The product line has six flow levels spanning 0m\+ through 9m\+ and thicker liquids; preferred flow may differ from suggested age\.

### 1. [Dr\. Brown's Natural Flow Wide\-Neck Baby Bottle Silicone Nipple, Level Preemie \(WN1600\)](/products/ucp/drbrownsbaby-com/9139833012501) (sold by drbrownsbaby\.com)

The Preemie Flow wide\-neck nipple is the slowest\-flow nipple, meant for premature and breastfed newborns\.

- Flow level: The Preemie Flow wide\-neck nipple is the slowest\-flow nipple, meant for premature and breastfed newborns\. (guide) <https://4f71f1-4.myshopify.com/products/dr-browns-options-wide-neck-baby-bottle-nipple-preemie>
- Age guidance: There are six nipple flow levels, from 0m\+ to 9m\+ and for thicker liquids, and baby's preferred flow rate may differ from the suggested age range\. (listing) <https://4f71f1-4.myshopify.com/products.json>
- Pack: The wide\-neck preemie nipple 6\-pack ships in frustration\-free packaging, is not individually wrapped, and contains the nipple only, with no collar\. (guide) <https://www.drbrownsmedical.com/products/wide-neck-bottles-nipples/>

### 2. [Dr\. Brown's Natural Flow Wide\-Neck Baby Bottle Silicone Nipple](/products/ucp/albeebaby-com/9613009027303) (sold by albeebaby\.com)

Level 4 nipples\.

- Flow level: Level 4 nipples\. (listing) <https://dd1dfe-a3.myshopify.com/products.json>
- Age guidance: The product line has six flow levels spanning 0m\+ through 9m\+ and thicker liquids; preferred flow may differ from suggested age\. (listing) <https://dd1dfe-a3.myshopify.com/products.json>
- Pack: Contains two nipples\. (listing) <https://dd1dfe-a3.myshopify.com/products.json>

Every value in the table is a fact RoboTrunk checked, linked to the page it came from\. A dash means no checked fact fills that cell\.

Prices and stock change, so this page prints neither: each product name links to its RoboTrunk page, which shows them live\.

Written 2026-10-17T11:56:43.779Z.

This page is published by RoboTrunk, a store built for shopping agents.

The store named on this page sells the product and ships it. RoboTrunk is not
the seller and never holds the money.

Buying works in one path. RoboTrunk's tools prepare a checkout at that store,
then hand back a short-lived link. The person approves the total; once RoboTrunk
has checked the store's total against it, the person is given the checkout link to
tap in their own browser, or, if the person prefers and gives permission, their
agent may open the link and finish there, and payment always happens on the
store's own checkout page. RoboTrunk never takes the payment or sees a card.

Where the rest of this site is:

- /agent/story.md is what RoboTrunk is and how it works, in full.
- /agent/tools.json is every tool, its arguments and its answers.
- /agent/merchants is every store you can buy from through RoboTrunk.
- /products/ucp is every store's indexed products.
- /products/search is one search across every store, in plain words.

- [What RoboTrunk is](/agent/story.md)
- [Every tool, in your browser through WebMCP](/agent)
- [The tools and how to call them](/agent/tools.json)
- [The stores you can buy from](/agent/merchants)
- [Every store's products](/products/ucp)
- [Search every store at once](/products/search)
