{
  "schema_version": "compare-page.v2",
  "page_id": "baby-sleep-sacks-compared-by-warmth-rating-for-a-cold-nurser",
  "url": "https://robotrunk.com/compare/want/baby-sleep-sacks-compared-by-warmth-rating-for-a-cold-nurser",
  "title": "Baby sleep sacks for warmth in a cold nursery",
  "question": "Which baby sleep sack provides enough warmth for a cold nursery?",
  "answer": "ergoPouch Sleep Sack 3.5 TOG Sleeved: The sleep sack carries a 3.5 TOG rating, shown at the top of the product page. It is a baby and toddler sleep sack designed for arms-out sleepers, usually from around 3 months of age.\nWildBird CloudBlend™ Sleep Sack TOG 2.5 - Dove Blue Grey: The sleep sack is rated TOG 2.5. The TOG 2.5 version has 80 g of DuPont polyester filler.\nWildBird CloudBlend™ Sleep Sack TOG 2.5 - Sparrow: The sleep sack is rated TOG 2.5, which tells you how warm and insulating it is.",
  "kind": "sleep sack",
  "market": "US",
  "generated_at": "2026-10-17T05:23:51.457Z",
  "columns": [
    "Warmth rating",
    "Filling",
    "Sizes",
    "Care"
  ],
  "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.f2",
      "product": "ergoPouch Sleep Sack 3.5 TOG Sleeved",
      "field": "What it is",
      "value": "It is a baby and toddler sleep sack designed for arms-out sleepers, usually from around 3 months of age.",
      "stated_as": "Baby and toddler sleep sack designed for arms-out sleepers (usually from around 3 months of age).",
      "source_type": "guide",
      "source_url": "https://www.ergopouch.com/products/sleep-sack-3-5-tog-daisies",
      "source_read_at": "2026-10-12T02:49:35.689Z"
    },
    {
      "ref": "p1.f4",
      "product": "ergoPouch Sleep Sack 3.5 TOG Sleeved",
      "field": "Sizes",
      "value": "The Daisies 3.5 TOG Sleeved sleep sack comes in three sizes: 2-4Y, 3-12M and 8-24M.",
      "stated_as": "Daisies / 3.5 TOG / 2-4Y — Daisies / 3.5 TOG / 3-12M — Daisies / 3.5 TOG / 8-24M",
      "source_type": "listing",
      "source_url": "https://ergopouch-us.myshopify.com/products.json",
      "source_read_at": "2026-10-11T07:17:22.303Z"
    },
    {
      "ref": "p1.f5",
      "product": "ergoPouch Sleep Sack 3.5 TOG Sleeved",
      "field": "TOG rating",
      "value": "The sleep sack carries a 3.5 TOG rating, shown at the top of the product page.",
      "stated_as": "3.5 TOG",
      "source_type": "guide",
      "source_url": "https://www.ergopouch.com/products/sleep-sack-3-5-tog-daisies",
      "source_read_at": "2026-10-12T02:49:35.689Z"
    },
    {
      "ref": "p2.f3",
      "product": "WildBird CloudBlend™ Sleep Sack TOG 2.5 - Sparrow",
      "field": "warmth rating",
      "value": "The sleep sack is rated TOG 2.5, which tells you how warm and insulating it is.",
      "stated_as": "Rated TOG 2.5 (TOG Guide).",
      "source_type": "guide",
      "source_url": "https://wildbird.co/collections/sleep-sack-tog-2-5-full/products/sparrow-cloudblend-sleep-sack-tog-2-5",
      "source_read_at": "2026-10-17T00:43:40.654Z"
    },
    {
      "ref": "p2.f4",
      "product": "WildBird CloudBlend™ Sleep Sack TOG 2.5 - Sparrow",
      "field": "sizing by weight",
      "value": "The review lists WildBird's size-by-weight guidance as Small 14–20 lb, Medium 18–30 lb and Large 28–42 lb, and says sizing is hard because babies vary in length for their weight and the sack leaves little spare length.",
      "stated_as": "The review lists WildBird's size-by-weight guidance as Small 14–20 lb, Medium 18–30 lb and Large 28–42 lb, and says sizing is hard because babies vary in length for their weight and the sack leaves little spare length.",
      "source_type": "blog",
      "source_url": "https://karingforpostpartum.squarespace.com/blog/best-baby-sleep-sacks",
      "source_read_at": "2026-10-17T00:43:56.160Z"
    },
    {
      "ref": "p2.f11",
      "product": "WildBird CloudBlend™ Sleep Sack TOG 2.5 - Sparrow",
      "field": "care",
      "value": "The review flags the air-dry-only care as a drawback and says that instruction is not always followed in practice.",
      "stated_as": "The review flags the air-dry-only care as a drawback and says that instruction is not always followed in practice.",
      "source_type": "blog",
      "source_url": "https://karingforpostpartum.squarespace.com/blog/best-baby-sleep-sacks",
      "source_read_at": "2026-10-17T00:43:56.160Z"
    },
    {
      "ref": "p3.f2",
      "product": "WildBird CloudBlend™ Sleep Sack TOG 2.5 - Dove Blue Grey",
      "field": "sizes",
      "value": "It is offered in three sizes: Small, Medium and Large.",
      "stated_as": "Size:\nSmall\nSmall\nMedium\nLarge",
      "source_type": "guide",
      "source_url": "https://strolleria.myshopify.com/products/wildbird-dove-cloudblend-sleep-sack-tog-2-5",
      "source_read_at": "2026-10-17T00:31:43.644Z"
    },
    {
      "ref": "p3.f7",
      "product": "WildBird CloudBlend™ Sleep Sack TOG 2.5 - Dove Blue Grey",
      "field": "warmth rating",
      "value": "The sleep sack is rated TOG 2.5.",
      "stated_as": "Rated TOG 2.5",
      "source_type": "guide",
      "source_url": "https://strolleria.myshopify.com/products/wildbird-dove-cloudblend-sleep-sack-tog-2-5",
      "source_read_at": "2026-10-17T00:31:43.644Z"
    },
    {
      "ref": "p3.f8",
      "product": "WildBird CloudBlend™ Sleep Sack TOG 2.5 - Dove Blue Grey",
      "field": "warmth and filling",
      "value": "The TOG 2.5 version has 80 g of DuPont polyester filler.",
      "stated_as": "TOG 2.5 has 80 g DuPont polyester filler.",
      "source_type": "guide",
      "source_url": "https://wildbird.co/collections/sleep-sack-2-5-tog/products/galah-cloudblend-sleep-sack-tog-2-5",
      "source_read_at": "2026-10-17T00:31:46.405Z"
    },
    {
      "ref": "p3.f9",
      "product": "WildBird CloudBlend™ Sleep Sack TOG 2.5 - Dove Blue Grey",
      "field": "care",
      "value": "The same reviewer dislikes that WildBird says the sack must be air dried and admits she does not follow that herself.",
      "stated_as": "The same reviewer dislikes that WildBird says the sack must be air dried and admits she does not follow that herself.",
      "source_type": "blog",
      "source_url": "https://karingforpostpartum.squarespace.com/blog/best-baby-sleep-sacks",
      "source_read_at": "2026-10-17T00:31:57.753Z"
    }
  ],
  "rows": [
    {
      "rank": 1,
      "merchant": {
        "slug": "ergopouch-com",
        "display_name": "ergopouch.com"
      },
      "product_id": "gid://shopify/Product/8261737021609",
      "name": "ergoPouch Sleep Sack 3.5 TOG Sleeved",
      "url": "/products/ucp/ergopouch-com/8261737021609",
      "why": "The sleep sack carries a 3.5 TOG rating, shown at the top of the product page.",
      "cells": [
        {
          "column": "Warmth rating",
          "fact": {
            "field": "TOG rating",
            "value": "The sleep sack carries a 3.5 TOG rating, shown at the top of the product page.",
            "stated_as": "3.5 TOG",
            "source_type": "guide",
            "source_url": "https://www.ergopouch.com/products/sleep-sack-3-5-tog-daisies",
            "source_read_at": "2026-10-12T02:49:35.689Z"
          }
        },
        {
          "column": "Filling",
          "fact": null
        },
        {
          "column": "Sizes",
          "fact": {
            "field": "Sizes",
            "value": "The Daisies 3.5 TOG Sleeved sleep sack comes in three sizes: 2-4Y, 3-12M and 8-24M.",
            "stated_as": "Daisies / 3.5 TOG / 2-4Y — Daisies / 3.5 TOG / 3-12M — Daisies / 3.5 TOG / 8-24M",
            "source_type": "listing",
            "source_url": "https://ergopouch-us.myshopify.com/products.json",
            "source_read_at": "2026-10-11T07:17:22.303Z"
          }
        },
        {
          "column": "Care",
          "fact": null
        }
      ]
    },
    {
      "rank": 2,
      "merchant": {
        "slug": "strolleria-com",
        "display_name": "strolleria.com"
      },
      "product_id": "gid://shopify/Product/8029484056650",
      "name": "WildBird CloudBlend™ Sleep Sack TOG 2.5 - Dove Blue Grey",
      "url": "/products/ucp/strolleria-com/8029484056650",
      "why": "The TOG 2.5 version has 80 g of DuPont polyester filler.",
      "cells": [
        {
          "column": "Warmth rating",
          "fact": {
            "field": "warmth rating",
            "value": "The sleep sack is rated TOG 2.5.",
            "stated_as": "Rated TOG 2.5",
            "source_type": "guide",
            "source_url": "https://strolleria.myshopify.com/products/wildbird-dove-cloudblend-sleep-sack-tog-2-5",
            "source_read_at": "2026-10-17T00:31:43.644Z"
          }
        },
        {
          "column": "Filling",
          "fact": {
            "field": "warmth and filling",
            "value": "The TOG 2.5 version has 80 g of DuPont polyester filler.",
            "stated_as": "TOG 2.5 has 80 g DuPont polyester filler.",
            "source_type": "guide",
            "source_url": "https://wildbird.co/collections/sleep-sack-2-5-tog/products/galah-cloudblend-sleep-sack-tog-2-5",
            "source_read_at": "2026-10-17T00:31:46.405Z"
          }
        },
        {
          "column": "Sizes",
          "fact": {
            "field": "sizes",
            "value": "It is offered in three sizes: Small, Medium and Large.",
            "stated_as": "Size:\nSmall\nSmall\nMedium\nLarge",
            "source_type": "guide",
            "source_url": "https://strolleria.myshopify.com/products/wildbird-dove-cloudblend-sleep-sack-tog-2-5",
            "source_read_at": "2026-10-17T00:31:43.644Z"
          }
        },
        {
          "column": "Care",
          "fact": {
            "field": "care",
            "value": "The same reviewer dislikes that WildBird says the sack must be air dried and admits she does not follow that herself.",
            "stated_as": "The same reviewer dislikes that WildBird says the sack must be air dried and admits she does not follow that herself.",
            "source_type": "blog",
            "source_url": "https://karingforpostpartum.squarespace.com/blog/best-baby-sleep-sacks",
            "source_read_at": "2026-10-17T00:31:57.753Z"
          }
        }
      ]
    },
    {
      "rank": 3,
      "merchant": {
        "slug": "strolleria-com",
        "display_name": "strolleria.com"
      },
      "product_id": "gid://shopify/Product/8029482319946",
      "name": "WildBird CloudBlend™ Sleep Sack TOG 2.5 - Sparrow",
      "url": "/products/ucp/strolleria-com/8029482319946",
      "why": "The sleep sack is rated TOG 2.5, which tells you how warm and insulating it is.",
      "cells": [
        {
          "column": "Warmth rating",
          "fact": {
            "field": "warmth rating",
            "value": "The sleep sack is rated TOG 2.5, which tells you how warm and insulating it is.",
            "stated_as": "Rated TOG 2.5 (TOG Guide).",
            "source_type": "guide",
            "source_url": "https://wildbird.co/collections/sleep-sack-tog-2-5-full/products/sparrow-cloudblend-sleep-sack-tog-2-5",
            "source_read_at": "2026-10-17T00:43:40.654Z"
          }
        },
        {
          "column": "Filling",
          "fact": null
        },
        {
          "column": "Sizes",
          "fact": {
            "field": "sizing by weight",
            "value": "The review lists WildBird's size-by-weight guidance as Small 14–20 lb, Medium 18–30 lb and Large 28–42 lb, and says sizing is hard because babies vary in length for their weight and the sack leaves little spare length.",
            "stated_as": "The review lists WildBird's size-by-weight guidance as Small 14–20 lb, Medium 18–30 lb and Large 28–42 lb, and says sizing is hard because babies vary in length for their weight and the sack leaves little spare length.",
            "source_type": "blog",
            "source_url": "https://karingforpostpartum.squarespace.com/blog/best-baby-sleep-sacks",
            "source_read_at": "2026-10-17T00:43:56.160Z"
          }
        },
        {
          "column": "Care",
          "fact": {
            "field": "care",
            "value": "The review flags the air-dry-only care as a drawback and says that instruction is not always followed in practice.",
            "stated_as": "The review flags the air-dry-only care as a drawback and says that instruction is not always followed in practice.",
            "source_type": "blog",
            "source_url": "https://karingforpostpartum.squarespace.com/blog/best-baby-sleep-sacks",
            "source_read_at": "2026-10-17T00:43:56.160Z"
          }
        }
      ]
    }
  ]
}