{
  "schema_version": "compare-page.v2",
  "page_id": "dr-brown-s-glass-baby-bottles",
  "url": "https://robotrunk.com/compare/want/dr-brown-s-glass-baby-bottles",
  "title": "Dr. Brown's Glass Baby Bottles: Capacity, Nipple and Vent System",
  "question": "Which Dr. Brown's baby bottles are made of glass, and what are their capacities, nipples, and vent systems?",
  "answer": "Dr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck Glass Baby Bottle: The listed product is Dr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck baby bottle with Level 1 slow flow nipple, 9 oz/270 mL, SKU WB91700, from Dr. Brown's. The catalogue says the glass material is linked to easier cleaning and deeper hygiene, and that the bottle does not absorb odours, flavours or colours from food. The breast-like nipple shape is designed to encourage a proper latch for a more natural bottle-feeding experience. The internal vent system is described as clinically proven to reduce colic and to help reduce spit-up, burping and gas.\nDr. Brown's Natural Flow® Anti-Colic Options+™ Glass Narrow Baby Bottle: The product is Dr. Brown's Natural Flow Anti-Colic Options+ Glass Narrow Baby Bottle with Level 1 Slow Flow Nipple, 4 oz/120 mL, 1-Pack, SKU SB41001, sold as Default Title. Vacuum-free feeding is described as closest to breastfeeding, with silicone nipples providing consistent flow so baby can feed at their own pace. Internal vent system is proven to help preserve bottle milk nutrients and aids in digestion for a better night’s sleep.\nDr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck Baby Bottle: This is a Dr. Brown's Natural Flow Anti-Colic Options+ wide-neck baby bottle in glass, 5oz/150mL, with a Level 1 slow-flow nipple. The nipple is high-grade soft silicone with a contoured breast-like shape, designed alongside medical professionals to help avoid nipple confusion. The enhanced internal vent system is described as improving an already innovative feeding experience on the fully-vented bottle.",
  "kind": "glass baby bottles",
  "market": "US",
  "generated_at": "2026-10-12T22:08:26.361Z",
  "columns": [
    "Glass",
    "Capacity",
    "Nipple",
    "Vent system"
  ],
  "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.f1",
      "product": "Dr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck Glass Baby Bottle",
      "field": "identity",
      "value": "The listed product is Dr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck baby bottle with Level 1 slow flow nipple, 9 oz/270 mL, SKU WB91700, from Dr. Brown's.",
      "stated_as": "Dr. Brown’s Natural Flow® Anti-Colic Options+™ Wide-Neck Baby Bottle with Level 1 Slow Flow Nipple, 9 oz/270 mL",
      "source_type": "listing",
      "source_url": "https://4f71f1-4.myshopify.com/products.json",
      "source_read_at": "2026-10-11T07:16:33.630Z"
    },
    {
      "ref": "p1.f2",
      "product": "Dr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck Glass Baby Bottle",
      "field": "nipple design",
      "value": "The breast-like nipple shape is designed to encourage a proper latch for a more natural bottle-feeding experience.",
      "stated_as": "The breast-like shape encourages a proper latch for a more natural bottle-feeding experience.",
      "source_type": "guide",
      "source_url": "https://4f71f1-4.myshopify.com/products/dr-browns-options-wide-neck-glass-baby-bottle-9oz",
      "source_read_at": "2026-10-11T18:50:55.101Z"
    },
    {
      "ref": "p1.f5",
      "product": "Dr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck Glass Baby Bottle",
      "field": "glass material",
      "value": "The catalogue says the glass material is linked to easier cleaning and deeper hygiene, and that the bottle does not absorb odours, flavours or colours from food.",
      "stated_as": "El material se asocia a una mayor facilidad de limpieza y, en consecuenica,\n  a una higiene más profunda. Este biberón no absorbe los olores, sabores y\n  colores de los alimentos.",
      "source_type": "manual",
      "source_url": "https://drbrowns.pe/wp-content/uploads/2025/01/Catalogo-Minorista-11.pdf",
      "source_read_at": "2026-10-11T18:51:33.079Z"
    },
    {
      "ref": "p1.f10",
      "product": "Dr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck Glass Baby Bottle",
      "field": "anti-colic claim",
      "value": "The internal vent system is described as clinically proven to reduce colic and to help reduce spit-up, burping and gas.",
      "stated_as": "The anti-colic internal vent system is clinically proven to reduce colic and helps reduce spit-up, burping, and gas.",
      "source_type": "listing",
      "source_url": "https://4f71f1-4.myshopify.com/products.json",
      "source_read_at": "2026-10-11T07:16:33.630Z"
    },
    {
      "ref": "p2.f1",
      "product": "Dr. Brown's Natural Flow® Anti-Colic Options+™ Glass Narrow Baby Bottle",
      "field": "identity",
      "value": "The product is Dr. Brown's Natural Flow Anti-Colic Options+ Glass Narrow Baby Bottle with Level 1 Slow Flow Nipple, 4 oz/120 mL, 1-Pack, SKU SB41001, sold as Default Title.",
      "stated_as": "Title: Dr. Brown's Natural Flow® Anti-Colic Options+™ Glass Narrow Baby Bottle with Level 1 Slow Flow Nipple, 4 oz/120 mL, 1-Pack",
      "source_type": "listing",
      "source_url": "https://4f71f1-4.myshopify.com/products.json",
      "source_read_at": "2026-10-11T07:16:33.630Z"
    },
    {
      "ref": "p2.f2",
      "product": "Dr. Brown's Natural Flow® Anti-Colic Options+™ Glass Narrow Baby Bottle",
      "field": "feeding style",
      "value": "Vacuum-free feeding is described as closest to breastfeeding, with silicone nipples providing consistent flow so baby can feed at their own pace.",
      "stated_as": "This vacuum-free feeding is closest to breastfeeding and Dr. Brown’s® silicone nipples provide a consistent flow so baby can feed at their own pace.",
      "source_type": "guide",
      "source_url": "https://4f71f1-4.myshopify.com/products/dr-browns-natural-flow-anti-colic-options-glass-baby-bottle-4oz-120ml",
      "source_read_at": "2026-10-11T18:20:05.118Z"
    },
    {
      "ref": "p2.f8",
      "product": "Dr. Brown's Natural Flow® Anti-Colic Options+™ Glass Narrow Baby Bottle",
      "field": "vent system",
      "value": "Internal vent system is proven to help preserve bottle milk nutrients and aids in digestion for a better night’s sleep.",
      "stated_as": "Dr. Brown’s internal vent system is proven to help preserve bottle milk nutrients and aids in digestion for a better night’s sleep.",
      "source_type": "guide",
      "source_url": "https://4f71f1-4.myshopify.com/products/dr-browns-natural-flow-anti-colic-options-glass-baby-bottle-4oz-120ml",
      "source_read_at": "2026-10-11T18:20:05.118Z"
    },
    {
      "ref": "p3.f1",
      "product": "Dr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck Baby Bottle",
      "field": "what it is",
      "value": "This is a Dr. Brown's Natural Flow Anti-Colic Options+ wide-neck baby bottle in glass, 5oz/150mL, with a Level 1 slow-flow nipple.",
      "stated_as": "Dr. Brown’s Natural Flow® Anti-Colic Options+™ Wide-Neck Baby Bottle with Level 1 Slow Flow Nipple, 5oz/150mL",
      "source_type": "listing",
      "source_url": "https://4f71f1-4.myshopify.com/products.json",
      "source_read_at": "2026-10-11T07:16:33.630Z"
    },
    {
      "ref": "p3.f8",
      "product": "Dr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck Baby Bottle",
      "field": "nipple material",
      "value": "The nipple is high-grade soft silicone with a contoured breast-like shape, designed alongside medical professionals to help avoid nipple confusion.",
      "stated_as": "Designed alongside medical professionals, the correctly contoured nipple shape and high-grade, soft silicone offer a more comfortable feeding experience and help to avoid nipple confusion.",
      "source_type": "guide",
      "source_url": "https://4f71f1-4.myshopify.com/products/dr-browns-anti-colic-options-wide-neck-baby-glass-bottle-5oz-150ml",
      "source_read_at": "2026-10-11T17:45:44.555Z"
    },
    {
      "ref": "p3.f9",
      "product": "Dr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck Baby Bottle",
      "field": "vent system",
      "value": "The enhanced internal vent system is described as improving an already innovative feeding experience on the fully-vented bottle.",
      "stated_as": "The anti-colic internal vent system features an enhanced design to improve an already innovative feeding experience.",
      "source_type": "guide",
      "source_url": "https://drbrownsbaby.com/collections/baby-bottles/products/dr-browns-anti-colic-options-wide-neck-baby-glass-bottle-5oz-150ml?bvroute=Review%2F70934169",
      "source_read_at": "2026-10-11T17:45:59.665Z"
    }
  ],
  "rows": [
    {
      "rank": 1,
      "merchant": {
        "slug": "drbrownsbaby-com",
        "display_name": "drbrownsbaby.com"
      },
      "product_id": "gid://shopify/Product/9139832848661",
      "name": "Dr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck Glass Baby Bottle",
      "url": "/products/ucp/drbrownsbaby-com/9139832848661",
      "why": "The listed product is Dr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck baby bottle with Level 1 slow flow nipple, 9 oz/270 mL, SKU WB91700, from Dr. Brown's.",
      "cells": [
        {
          "column": "Glass",
          "fact": {
            "field": "glass material",
            "value": "The catalogue says the glass material is linked to easier cleaning and deeper hygiene, and that the bottle does not absorb odours, flavours or colours from food.",
            "stated_as": "El material se asocia a una mayor facilidad de limpieza y, en consecuenica,\n  a una higiene más profunda. Este biberón no absorbe los olores, sabores y\n  colores de los alimentos.",
            "source_type": "manual",
            "source_url": "https://drbrowns.pe/wp-content/uploads/2025/01/Catalogo-Minorista-11.pdf",
            "source_read_at": "2026-10-11T18:51:33.079Z"
          }
        },
        {
          "column": "Capacity",
          "fact": {
            "field": "identity",
            "value": "The listed product is Dr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck baby bottle with Level 1 slow flow nipple, 9 oz/270 mL, SKU WB91700, from Dr. Brown's.",
            "stated_as": "Dr. Brown’s Natural Flow® Anti-Colic Options+™ Wide-Neck Baby Bottle with Level 1 Slow Flow Nipple, 9 oz/270 mL",
            "source_type": "listing",
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            "source_read_at": "2026-10-11T07:16:33.630Z"
          }
        },
        {
          "column": "Nipple",
          "fact": {
            "field": "nipple design",
            "value": "The breast-like nipple shape is designed to encourage a proper latch for a more natural bottle-feeding experience.",
            "stated_as": "The breast-like shape encourages a proper latch for a more natural bottle-feeding experience.",
            "source_type": "guide",
            "source_url": "https://4f71f1-4.myshopify.com/products/dr-browns-options-wide-neck-glass-baby-bottle-9oz",
            "source_read_at": "2026-10-11T18:50:55.101Z"
          }
        },
        {
          "column": "Vent system",
          "fact": {
            "field": "anti-colic claim",
            "value": "The internal vent system is described as clinically proven to reduce colic and to help reduce spit-up, burping and gas.",
            "stated_as": "The anti-colic internal vent system is clinically proven to reduce colic and helps reduce spit-up, burping, and gas.",
            "source_type": "listing",
            "source_url": "https://4f71f1-4.myshopify.com/products.json",
            "source_read_at": "2026-10-11T07:16:33.630Z"
          }
        }
      ]
    },
    {
      "rank": 2,
      "merchant": {
        "slug": "drbrownsbaby-com",
        "display_name": "drbrownsbaby.com"
      },
      "product_id": "gid://shopify/Product/9139832160533",
      "name": "Dr. Brown's Natural Flow® Anti-Colic Options+™ Glass Narrow Baby Bottle",
      "url": "/products/ucp/drbrownsbaby-com/9139832160533",
      "why": "Internal vent system is proven to help preserve bottle milk nutrients and aids in digestion for a better night’s sleep.",
      "cells": [
        {
          "column": "Glass",
          "fact": null
        },
        {
          "column": "Capacity",
          "fact": {
            "field": "identity",
            "value": "The product is Dr. Brown's Natural Flow Anti-Colic Options+ Glass Narrow Baby Bottle with Level 1 Slow Flow Nipple, 4 oz/120 mL, 1-Pack, SKU SB41001, sold as Default Title.",
            "stated_as": "Title: Dr. Brown's Natural Flow® Anti-Colic Options+™ Glass Narrow Baby Bottle with Level 1 Slow Flow Nipple, 4 oz/120 mL, 1-Pack",
            "source_type": "listing",
            "source_url": "https://4f71f1-4.myshopify.com/products.json",
            "source_read_at": "2026-10-11T07:16:33.630Z"
          }
        },
        {
          "column": "Nipple",
          "fact": {
            "field": "feeding style",
            "value": "Vacuum-free feeding is described as closest to breastfeeding, with silicone nipples providing consistent flow so baby can feed at their own pace.",
            "stated_as": "This vacuum-free feeding is closest to breastfeeding and Dr. Brown’s® silicone nipples provide a consistent flow so baby can feed at their own pace.",
            "source_type": "guide",
            "source_url": "https://4f71f1-4.myshopify.com/products/dr-browns-natural-flow-anti-colic-options-glass-baby-bottle-4oz-120ml",
            "source_read_at": "2026-10-11T18:20:05.118Z"
          }
        },
        {
          "column": "Vent system",
          "fact": {
            "field": "vent system",
            "value": "Internal vent system is proven to help preserve bottle milk nutrients and aids in digestion for a better night’s sleep.",
            "stated_as": "Dr. Brown’s internal vent system is proven to help preserve bottle milk nutrients and aids in digestion for a better night’s sleep.",
            "source_type": "guide",
            "source_url": "https://4f71f1-4.myshopify.com/products/dr-browns-natural-flow-anti-colic-options-glass-baby-bottle-4oz-120ml",
            "source_read_at": "2026-10-11T18:20:05.118Z"
          }
        }
      ]
    },
    {
      "rank": 3,
      "merchant": {
        "slug": "drbrownsbaby-com",
        "display_name": "drbrownsbaby.com"
      },
      "product_id": "gid://shopify/Product/9139832979733",
      "name": "Dr. Brown's Natural Flow Anti-Colic Options+ Wide-Neck Baby Bottle",
      "url": "/products/ucp/drbrownsbaby-com/9139832979733",
      "why": "This is a Dr. Brown's Natural Flow Anti-Colic Options+ wide-neck baby bottle in glass, 5oz/150mL, with a Level 1 slow-flow nipple.",
      "cells": [
        {
          "column": "Glass",
          "fact": {
            "field": "what it is",
            "value": "This is a Dr. Brown's Natural Flow Anti-Colic Options+ wide-neck baby bottle in glass, 5oz/150mL, with a Level 1 slow-flow nipple.",
            "stated_as": "Dr. Brown’s Natural Flow® Anti-Colic Options+™ Wide-Neck Baby Bottle with Level 1 Slow Flow Nipple, 5oz/150mL",
            "source_type": "listing",
            "source_url": "https://4f71f1-4.myshopify.com/products.json",
            "source_read_at": "2026-10-11T07:16:33.630Z"
          }
        },
        {
          "column": "Capacity",
          "fact": {
            "field": "what it is",
            "value": "This is a Dr. Brown's Natural Flow Anti-Colic Options+ wide-neck baby bottle in glass, 5oz/150mL, with a Level 1 slow-flow nipple.",
            "stated_as": "Dr. Brown’s Natural Flow® Anti-Colic Options+™ Wide-Neck Baby Bottle with Level 1 Slow Flow Nipple, 5oz/150mL",
            "source_type": "listing",
            "source_url": "https://4f71f1-4.myshopify.com/products.json",
            "source_read_at": "2026-10-11T07:16:33.630Z"
          }
        },
        {
          "column": "Nipple",
          "fact": {
            "field": "nipple material",
            "value": "The nipple is high-grade soft silicone with a contoured breast-like shape, designed alongside medical professionals to help avoid nipple confusion.",
            "stated_as": "Designed alongside medical professionals, the correctly contoured nipple shape and high-grade, soft silicone offer a more comfortable feeding experience and help to avoid nipple confusion.",
            "source_type": "guide",
            "source_url": "https://4f71f1-4.myshopify.com/products/dr-browns-anti-colic-options-wide-neck-baby-glass-bottle-5oz-150ml",
            "source_read_at": "2026-10-11T17:45:44.555Z"
          }
        },
        {
          "column": "Vent system",
          "fact": {
            "field": "vent system",
            "value": "The enhanced internal vent system is described as improving an already innovative feeding experience on the fully-vented bottle.",
            "stated_as": "The anti-colic internal vent system features an enhanced design to improve an already innovative feeding experience.",
            "source_type": "guide",
            "source_url": "https://drbrownsbaby.com/collections/baby-bottles/products/dr-browns-anti-colic-options-wide-neck-baby-glass-bottle-5oz-150ml?bvroute=Review%2F70934169",
            "source_read_at": "2026-10-11T17:45:59.665Z"
          }
        }
      ]
    }
  ]
}