# Haakaa pump size and nipple fit

Which Haakaa pump size suits my nipple best?

Haakaa Generation 2 100/150ml Silicone Breast Pump with Suction Base: All Haakaa pumps share the same flange size and are one\-size\-fits\-all because the flange is soft flexible silicone\. The listing labels each pump's size as 4 oz \(100 ml\)\. Haakaa Generation 3 Silicone Breast Pump: All Haakaa pumps have the same size flange\. The Gen 3 pump comes in 160ml/6oz and 250ml/9oz capacities\. Haakaa Generation 2 Silicone Breast Pump with Suction Base 5 oz \(150 ml\): The flexible silicone flange moulds to the breast and accommodates different breast sizes\.

### 1. [Haakaa Generation 2 100/150ml Silicone Breast Pump with Suction Base](/products/ucp/haakaausa-com/8575357709) (sold by haakaausa\.com)

All Haakaa pumps share the same flange size and are one\-size\-fits\-all because the flange is soft flexible silicone\.

- Flange fit: All Haakaa pumps share the same flange size and are one\-size\-fits\-all because the flange is soft flexible silicone\. (guide) <https://www.haakaa.me/pages/haakaa-silicone-breast-pump-faqs>
- Capacity: The listing labels each pump's size as 4 oz \(100 ml\)\. (listing) <https://temp2016.myshopify.com/products.json>
- Suction base: A suction base on the bottom stops the pump falling over and spilling\. (listing) <https://temp2016.myshopify.com/products.json>

### 2. [Haakaa Generation 3 Silicone Breast Pump](/products/ucp/haakaausa-com/803136733237) (sold by haakaausa\.com)

All Haakaa pumps have the same size flange\.

- Flange fit: All Haakaa pumps have the same size flange\. (guide) <https://www.haakaa.co.nz/pages/faq>
- Capacity: The Gen 3 pump comes in 160ml/6oz and 250ml/9oz capacities\. (listing) <https://temp2016.myshopify.com/products.json>
- Suction base: -

### 3. [Haakaa Generation 2 Silicone Breast Pump with Suction Base 5 oz \(150 ml\)](/products/ucp/haakaausa-com/8210425025) (sold by haakaausa\.com)

The flexible silicone flange moulds to the breast and accommodates different breast sizes\.

- Flange fit: The flexible silicone flange moulds to the breast and accommodates different breast sizes\. (guide) <https://www.haakaa.co.nz/products/100ml-silicone-breast-pump-with-suction-base>
- Capacity: -
- Suction base: -

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 2026-10-15T13:30:34.831Z.

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)