{
  "schema_version": "compare-page.v2",
  "page_id": "choosing-a-nipple-shield-size-8f28d689",
  "url": "https://robotrunk.com/compare/want/choosing-a-nipple-shield-size-8f28d689",
  "title": "Choosing a Nipple Shield Size",
  "question": "How can a shopper tell which nipple shield size to buy?",
  "answer": "Haakaa MHK003 / MHK003-L: Available in 18 mm and 24 mm sizes.\nHaakaa Silicone Nipple Shields 2 Pack: This shield comes in two opening sizes, 18 mm (M) and 24 mm (L).\nHaakaa Silicone Breastfeeding Nipple Shield, Round Shape 1 pk: The nipple (bottle teat) version has a 23 mm opening for the mother's nipple. The round-shaped base is stated to suction onto all breast shapes.\nHaakaa Silicone Breastfeeding Nipple Shield with Orthodontic Nipple: The orthodontic version has a 28mm diameter opening for the mother's nipple. The round base is larger and suctions on more easily, suiting beginners, while the triangle base is smaller and gives more skin-to-skin contact for experienced users.",
  "kind": "breastfeeding supply",
  "market": "US",
  "generated_at": "2026-10-25T01:47:59.046Z",
  "columns": [
    "Sizes",
    "Base shape",
    "Fit guidance"
  ],
  "notices": {
    "facts": "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.",
    "price": "Prices and stock change, so this page prints neither: each product name links to its RoboTrunk page, which shows them live."
  },
  "cited_facts": [
    {
      "ref": "p1.f3",
      "product": "Haakaa Silicone Nipple Shields 2 Pack",
      "field": "sizes",
      "value": "This shield comes in two opening sizes, 18 mm (M) and 24 mm (L).",
      "stated_as": "Our Silicone Nipple Shields have two opening choices to fit your nipple: 18mm (M) OR 24mm (L)",
      "source_type": "guide",
      "source_url": "https://www.haakaa.co.nz/products/skin-friendly-silicone-nipple-shield-2p",
      "source_read_at": "2026-10-12T14:07:07.571Z"
    },
    {
      "ref": "p1.f9",
      "product": "Haakaa Silicone Nipple Shields 2 Pack",
      "field": "cut-out shape",
      "value": "The angled cut-out shape is very noticeable and is seen as the feature that maximises skin-to-skin contact between mother and baby.",
      "stated_as": "The angled cut-out shape is very noticeable and is seen as the feature that maximises skin-to-skin contact between mother and baby.",
      "source_type": "blog",
      "source_url": "https://www.thebabyverse.org/haakaa-nippleshield-silicone-nipple-shields-for-breastfeeding-2pk-review-the-gentle-ally-for-every-nursing-journey/",
      "source_read_at": "2026-10-12T14:07:11.542Z"
    },
    {
      "ref": "p2.f6",
      "product": "Haakaa MHK003 / MHK003-L",
      "field": "Design",
      "value": "The cut-out shape is intended to maximise skin-to-skin contact between mother and baby.",
      "stated_as": "The cut-out shape is intended to maximise skin-to-skin contact between mother and baby.",
      "source_type": "blog",
      "source_url": "https://www.thebabyverse.org/haakaa-nippleshield-silicone-nipple-shields-for-breastfeeding-2pk-review-the-gentle-ally-for-every-nursing-journey/",
      "source_read_at": "2026-10-12T14:09:47.247Z"
    },
    {
      "ref": "p2.f7",
      "product": "Haakaa MHK003 / MHK003-L",
      "field": "sizes",
      "value": "Available in 18 mm and 24 mm sizes.",
      "stated_as": "Variant: 18 mm | 26.00 USD | SKU MHK003-Wholesale-4pk\nVariant: 24 mm | 26.00 USD | SKU MHK003-L-wholesale-4pk",
      "source_type": "listing",
      "source_url": "https://temp2016.myshopify.com/products.json",
      "source_read_at": "2026-10-11T07:21:10.371Z"
    },
    {
      "ref": "p3.f4",
      "product": "Haakaa Silicone Breastfeeding Nipple Shield with Orthodontic Nipple",
      "field": "sizing",
      "value": "The orthodontic version has a 28mm diameter opening for the mother's nipple.",
      "stated_as": "Our Orthodontic Shield has an opening that's 28mm in diameter for your nipple.",
      "source_type": "guide",
      "source_url": "https://temp2016.myshopify.com/products/haakaa-silicone-breastfeeding-nipple-shield-with-orthodontic-nipple-1-pk",
      "source_read_at": "2026-10-12T12:59:31.521Z"
    },
    {
      "ref": "p3.f7",
      "product": "Haakaa Silicone Breastfeeding Nipple Shield with Orthodontic Nipple",
      "field": "variants",
      "value": "The round base is larger and suctions on more easily, suiting beginners, while the triangle base is smaller and gives more skin-to-skin contact for experienced users.",
      "stated_as": "The round base is larger and suctions on more easily, making it more suited for those who are new to using nipple shields. The triangle base is smaller, but allows for more skin-to-skin contact",
      "source_type": "guide",
      "source_url": "https://temp2016.myshopify.com/products/haakaa-silicone-breastfeeding-nipple-shield-with-orthodontic-nipple-1-pk",
      "source_read_at": "2026-10-12T12:59:31.521Z"
    },
    {
      "ref": "p3.f11",
      "product": "Haakaa Silicone Breastfeeding Nipple Shield with Orthodontic Nipple",
      "field": "staying in place",
      "value": "Centring the shield with no gaps or air pockets, and putting a little expressed milk inside it first, are said to give a better seal and reduce collapse.",
      "stated_as": "Centring the shield with no gaps or air pockets, and putting a little expressed milk inside it first, are said to give a better seal and reduce collapse.",
      "source_type": "manual",
      "source_url": "https://www.haakaa.co.nz/products/silicone-nipple-shield",
      "source_read_at": "2026-10-12T12:59:45.851Z"
    },
    {
      "ref": "p4.f1",
      "product": "Haakaa Silicone Breastfeeding Nipple Shield, Round Shape 1 pk",
      "field": "round versus triangle base",
      "value": "The round base is the larger option, suctions on more easily and is recommended for people new to nipple shields.",
      "stated_as": "The round base is larger and suctions on more easily, making it more suited for those who are new to using nipple shields.",
      "source_type": "listing",
      "source_url": "https://temp2016.myshopify.com/products.json",
      "source_read_at": "2026-10-11T07:21:10.371Z"
    },
    {
      "ref": "p4.f6",
      "product": "Haakaa Silicone Breastfeeding Nipple Shield, Round Shape 1 pk",
      "field": "nipple opening size",
      "value": "The nipple (bottle teat) version has a 23 mm opening for the mother's nipple.",
      "stated_as": "Our Breastfeeding Nipple Shield has an opening that's 23mm in diameter for your nipple",
      "source_type": "guide",
      "source_url": "https://haakaausa.com/products/haakaa-silicone-nipple-shields-round-shape-1-pk-1",
      "source_read_at": "2026-10-12T14:19:27.606Z"
    },
    {
      "ref": "p4.f9",
      "product": "Haakaa Silicone Breastfeeding Nipple Shield, Round Shape 1 pk",
      "field": "fit to breast shape",
      "value": "The round-shaped base is stated to suction onto all breast shapes.",
      "stated_as": "The unique round-shaped base design suctions on to all breast shapes, making it easier for new moms to use and enjoy a hands-free breastfeeding experience.",
      "source_type": "guide",
      "source_url": "https://haakaausa.com/products/haakaa-silicone-nipple-shields-round-shape-1-pk-1",
      "source_read_at": "2026-10-12T14:19:27.606Z"
    },
    {
      "ref": "p4.f10",
      "product": "Haakaa Silicone Breastfeeding Nipple Shield, Round Shape 1 pk",
      "field": "milk supply worries",
      "value": "A shield can affect milk supply in either direction, so anyone worried about supply is advised to check sizing and fit and to speak to a lactation consultant or healthcare provider.",
      "stated_as": "A shield can affect milk supply in either direction, so anyone worried about supply is advised to check sizing and fit and to speak to a lactation consultant or healthcare provider.",
      "source_type": "manual",
      "source_url": "https://www.haakaa.co.nz/products/silicone-nipple-shield",
      "source_read_at": "2026-10-12T14:19:30.178Z"
    }
  ],
  "rows": [
    {
      "rank": 1,
      "merchant": {
        "slug": "haakaausa-com",
        "display_name": "haakaausa.com"
      },
      "product_id": "gid://shopify/Product/7160616897",
      "name": "Haakaa MHK003 / MHK003-L",
      "url": "/products/ucp/haakaausa-com/7160616897",
      "why": "Available in 18 mm and 24 mm sizes.",
      "cells": [
        {
          "column": "Sizes",
          "fact": {
            "field": "sizes",
            "value": "Available in 18 mm and 24 mm sizes.",
            "stated_as": "Variant: 18 mm | 26.00 USD | SKU MHK003-Wholesale-4pk\nVariant: 24 mm | 26.00 USD | SKU MHK003-L-wholesale-4pk",
            "source_type": "listing",
            "source_url": "https://temp2016.myshopify.com/products.json",
            "source_read_at": "2026-10-11T07:21:10.371Z"
          }
        },
        {
          "column": "Base shape",
          "fact": null
        },
        {
          "column": "Fit guidance",
          "fact": {
            "field": "Design",
            "value": "The cut-out shape is intended to maximise skin-to-skin contact between mother and baby.",
            "stated_as": "The cut-out shape is intended to maximise skin-to-skin contact between mother and baby.",
            "source_type": "blog",
            "source_url": "https://www.thebabyverse.org/haakaa-nippleshield-silicone-nipple-shields-for-breastfeeding-2pk-review-the-gentle-ally-for-every-nursing-journey/",
            "source_read_at": "2026-10-12T14:09:47.247Z"
          }
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    {
      "rank": 2,
      "merchant": {
        "slug": "haakaausa-com",
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      "product_id": "gid://shopify/Product/8244349121",
      "name": "Haakaa Silicone Nipple Shields 2 Pack",
      "url": "/products/ucp/haakaausa-com/8244349121",
      "why": "This shield comes in two opening sizes, 18 mm (M) and 24 mm (L).",
      "cells": [
        {
          "column": "Sizes",
          "fact": {
            "field": "sizes",
            "value": "This shield comes in two opening sizes, 18 mm (M) and 24 mm (L).",
            "stated_as": "Our Silicone Nipple Shields have two opening choices to fit your nipple: 18mm (M) OR 24mm (L)",
            "source_type": "guide",
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        },
        {
          "column": "Base shape",
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            "source_type": "blog",
            "source_url": "https://www.thebabyverse.org/haakaa-nippleshield-silicone-nipple-shields-for-breastfeeding-2pk-review-the-gentle-ally-for-every-nursing-journey/",
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      "name": "Haakaa Silicone Breastfeeding Nipple Shield, Round Shape 1 pk",
      "url": "/products/ucp/haakaausa-com/1502794481717",
      "why": "The round-shaped base is stated to suction onto all breast shapes.",
      "cells": [
        {
          "column": "Sizes",
          "fact": {
            "field": "nipple opening size",
            "value": "The nipple (bottle teat) version has a 23 mm opening for the mother's nipple.",
            "stated_as": "Our Breastfeeding Nipple Shield has an opening that's 23mm in diameter for your nipple",
            "source_type": "guide",
            "source_url": "https://haakaausa.com/products/haakaa-silicone-nipple-shields-round-shape-1-pk-1",
            "source_read_at": "2026-10-12T14:19:27.606Z"
          }
        },
        {
          "column": "Base shape",
          "fact": {
            "field": "round versus triangle base",
            "value": "The round base is the larger option, suctions on more easily and is recommended for people new to nipple shields.",
            "stated_as": "The round base is larger and suctions on more easily, making it more suited for those who are new to using nipple shields.",
            "source_type": "listing",
            "source_url": "https://temp2016.myshopify.com/products.json",
            "source_read_at": "2026-10-11T07:21:10.371Z"
          }
        },
        {
          "column": "Fit guidance",
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            "value": "A shield can affect milk supply in either direction, so anyone worried about supply is advised to check sizing and fit and to speak to a lactation consultant or healthcare provider.",
            "stated_as": "A shield can affect milk supply in either direction, so anyone worried about supply is advised to check sizing and fit and to speak to a lactation consultant or healthcare provider.",
            "source_type": "manual",
            "source_url": "https://www.haakaa.co.nz/products/silicone-nipple-shield",
            "source_read_at": "2026-10-12T14:19:30.178Z"
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          "column": "Sizes",
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            "field": "sizing",
            "value": "The orthodontic version has a 28mm diameter opening for the mother's nipple.",
            "stated_as": "Our Orthodontic Shield has an opening that's 28mm in diameter for your nipple.",
            "source_type": "guide",
            "source_url": "https://temp2016.myshopify.com/products/haakaa-silicone-breastfeeding-nipple-shield-with-orthodontic-nipple-1-pk",
            "source_read_at": "2026-10-12T12:59:31.521Z"
          }
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          "column": "Base shape",
          "fact": {
            "field": "variants",
            "value": "The round base is larger and suctions on more easily, suiting beginners, while the triangle base is smaller and gives more skin-to-skin contact for experienced users.",
            "stated_as": "The round base is larger and suctions on more easily, making it more suited for those who are new to using nipple shields. The triangle base is smaller, but allows for more skin-to-skin contact",
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            "source_read_at": "2026-10-12T12:59:31.521Z"
          }
        },
        {
          "column": "Fit guidance",
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            "field": "staying in place",
            "value": "Centring the shield with no gaps or air pockets, and putting a little expressed milk inside it first, are said to give a better seal and reduce collapse.",
            "stated_as": "Centring the shield with no gaps or air pockets, and putting a little expressed milk inside it first, are said to give a better seal and reduce collapse.",
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            "source_read_at": "2026-10-12T12:59:45.851Z"
          }
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      ]
    }
  ]
}