{
  "schema_version": "compare-page.v2",
  "page_id": "kids-mattresses-compared-by-smell-at-unboxing",
  "url": "https://robotrunk.com/compare/want/kids-mattresses-compared-by-smell-at-unboxing",
  "title": "Kids' mattresses compared by smell at unboxing",
  "question": "Which children's mattresses have the weakest smell when first unboxed?",
  "answer": "Naturepedic Breathable Ultra Organic 2-Stage Crib Mattress (Breathable Ultra 252 2-Stage): There was no detectable new-mattress smell on opening, which suggests little off-gassing of VOCs and matches its Greenguard Gold certification. Babyletto M5321C (sold by megababiesusa.com): There was no chemical or plastic smell at unboxing, so no airing-out period was needed before use. Babyletto M5321C (store SKU BYL-M5321C): There was no chemical or plastic smell, so no airing-out period was needed. Moonlight Slumber Little Dreamer Crib Mattress: The blog noticed no strong new-mattress smell and said it was ready for the nursery almost immediately. Naturepedic Verse Organic Mattress (Verse Organic Kids and Teen Mattress): Owners report a smell when the mattress is first unpacked that lingers a while, described as earthy rather than chemical, and said not to feel worrying.",
  "kind": "mattress",
  "market": "US",
  "generated_at": "2026-10-24T20:06:00.747Z",
  "columns": [
    "Unboxing smell",
    "Certification"
  ],
  "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": "p2.f10",
      "product": "Naturepedic Breathable Ultra Organic 2-Stage Crib Mattress (Breathable Ultra 252 2-Stage)",
      "field": "unboxing smell",
      "value": "There was no detectable new-mattress smell on opening, which suggests little off-gassing of VOCs and matches its Greenguard Gold certification.",
      "stated_as": "There was no detectable new-mattress smell on opening, which suggests little off-gassing of VOCs and matches its Greenguard Gold certification.",
      "source_type": "blog",
      "source_url": "https://greenactivefamily.com/nursery/cribs-bedding/best-naturepedic-crib-mattress/",
      "source_read_at": "2026-10-15T08:15:27.961Z"
    },
    {
      "ref": "p5.f11",
      "product": "Naturepedic Verse Organic Mattress (Verse Organic Kids and Teen Mattress)",
      "field": "smell on unpacking",
      "value": "Owners report a smell when the mattress is first unpacked that lingers a while, described as earthy rather than chemical, and said not to feel worrying.",
      "stated_as": "Owners report a smell when the mattress is first unpacked that lingers a while, described as earthy rather than chemical, and said not to feel worrying.",
      "source_type": "review",
      "source_url": "https://redditrecs.com/mattress/model/naturepedic-verse/",
      "source_read_at": "2026-10-15T09:36:57.073Z"
    },
    {
      "ref": "p6.f9",
      "product": "Moonlight Slumber Little Dreamer Crib Mattress",
      "field": "New-mattress smell",
      "value": "The blog noticed no strong new-mattress smell and said it was ready for the nursery almost immediately.",
      "stated_as": "The blog noticed no strong new-mattress smell and said it was ready for the nursery almost immediately.",
      "source_type": "blog",
      "source_url": "https://www.thebabyverse.org/moonlight-slumber-little-dreamer-dual-sided-crib-mattress-review-the-ultimate-sleep-investment-for-your-growing-child/",
      "source_read_at": "2026-10-19T18:19:30.134Z"
    },
    {
      "ref": "p7.f7",
      "product": "Babyletto M5321C (store SKU BYL-M5321C)",
      "field": "Store certifications",
      "value": "The store's structured product data lists Eco-Friendly, GREENGUARD, GREENGUARD Gold, BPA Free, No Added Formaldehyde, No Known Harmful Phthalates, No PFAS, Low VOC, Fire Retardant Free and Recycled Materials.",
      "stated_as": "\"name\":\"Certifications\",\"value\":[\"Eco-Friendly\",\"GREENGUARD\",\"GREENGUARD Gold\",\"BPA Free\",\"No Added Formaldehyde\",\"No Known Harmful Phthalates\",\"No PFAS\",\"Low VOC\",\"Fire Retardant Free\",\"Recycled Materials\"]",
      "source_type": "guide",
      "source_url": "https://modern-nursery-test-store.myshopify.com/products/babyletto-pure-core-non-toxic-crib-mattress-with-hybrid-cover",
      "source_read_at": "2026-10-21T10:10:49.798Z"
    },
    {
      "ref": "p7.f10",
      "product": "Babyletto M5321C (store SKU BYL-M5321C)",
      "field": "Off-gassing",
      "value": "There was no chemical or plastic smell, so no airing-out period was needed.",
      "stated_as": "There was no chemical or plastic smell, so no airing-out period was needed.",
      "source_type": "blog",
      "source_url": "https://www.homeandtome.org/babyletto-pure-core-2-stage-crib-mattress-review-a-parents-deep-dive-into-safety-and-comfort/",
      "source_read_at": "2026-10-21T10:11:06.840Z"
    },
    {
      "ref": "p8.f10",
      "product": "Babyletto M5321C",
      "field": "smell",
      "value": "There was no chemical or plastic smell at unboxing, so no airing-out period was needed before use.",
      "stated_as": "There was no chemical or plastic smell at unboxing, so no airing-out period was needed before use.",
      "source_type": "blog",
      "source_url": "https://www.homeandtome.org/babyletto-pure-core-2-stage-crib-mattress-review-a-parents-deep-dive-into-safety-and-comfort/",
      "source_read_at": "2026-10-17T13:55:34.881Z"
    },
    {
      "ref": "p8.f11",
      "product": "Babyletto M5321C",
      "field": "certification",
      "value": "It is GREENGUARD Gold Certified, having been tested for over 10,000 chemical emissions and VOCs.",
      "stated_as": "Greenguard Gold Certified and has undergone rigorous scientific testing for over 10,000 chemical emissions and VOCs.",
      "source_type": "listing",
      "source_url": "https://top-stroll.myshopify.com/products.json",
      "source_read_at": "2026-10-16T19:39:19.579Z"
    }
  ],
  "rows": [
    {
      "rank": 1,
      "merchant": {
        "slug": "strolleria-com",
        "display_name": "strolleria.com"
      },
      "product_id": "gid://shopify/Product/8189250109514",
      "name": "Naturepedic Breathable Ultra Organic 2-Stage Crib Mattress (Breathable Ultra 252 2-Stage)",
      "url": "/products/ucp/strolleria-com/8189250109514",
      "why": "There was no detectable new-mattress smell on opening, which suggests little off-gassing of VOCs and matches its Greenguard Gold certification.",
      "cells": [
        {
          "column": "Unboxing smell",
          "fact": {
            "field": "unboxing smell",
            "value": "There was no detectable new-mattress smell on opening, which suggests little off-gassing of VOCs and matches its Greenguard Gold certification.",
            "stated_as": "There was no detectable new-mattress smell on opening, which suggests little off-gassing of VOCs and matches its Greenguard Gold certification.",
            "source_type": "blog",
            "source_url": "https://greenactivefamily.com/nursery/cribs-bedding/best-naturepedic-crib-mattress/",
            "source_read_at": "2026-10-15T08:15:27.961Z"
          }
        },
        {
          "column": "Certification",
          "fact": null
        }
      ]
    },
    {
      "rank": 2,
      "merchant": {
        "slug": "megababiesusa-com",
        "display_name": "megababiesusa.com"
      },
      "product_id": "gid://shopify/Product/8728869110014",
      "name": "Babyletto M5321C",
      "url": "/products/ucp/megababiesusa-com/8728869110014",
      "why": "There was no chemical or plastic smell at unboxing, so no airing-out period was needed before use.",
      "cells": [
        {
          "column": "Unboxing smell",
          "fact": {
            "field": "smell",
            "value": "There was no chemical or plastic smell at unboxing, so no airing-out period was needed before use.",
            "stated_as": "There was no chemical or plastic smell at unboxing, so no airing-out period was needed before use.",
            "source_type": "blog",
            "source_url": "https://www.homeandtome.org/babyletto-pure-core-2-stage-crib-mattress-review-a-parents-deep-dive-into-safety-and-comfort/",
            "source_read_at": "2026-10-17T13:55:34.881Z"
          }
        },
        {
          "column": "Certification",
          "fact": {
            "field": "certification",
            "value": "It is GREENGUARD Gold Certified, having been tested for over 10,000 chemical emissions and VOCs.",
            "stated_as": "Greenguard Gold Certified and has undergone rigorous scientific testing for over 10,000 chemical emissions and VOCs.",
            "source_type": "listing",
            "source_url": "https://top-stroll.myshopify.com/products.json",
            "source_read_at": "2026-10-16T19:39:19.579Z"
          }
        }
      ]
    },
    {
      "rank": 3,
      "merchant": {
        "slug": "modernnursery-com",
        "display_name": "modernnursery.com"
      },
      "product_id": "gid://shopify/Product/4799086198884",
      "name": "Babyletto M5321C (store SKU BYL-M5321C)",
      "url": "/products/ucp/modernnursery-com/4799086198884",
      "why": "There was no chemical or plastic smell, so no airing-out period was needed.",
      "cells": [
        {
          "column": "Unboxing smell",
          "fact": {
            "field": "Off-gassing",
            "value": "There was no chemical or plastic smell, so no airing-out period was needed.",
            "stated_as": "There was no chemical or plastic smell, so no airing-out period was needed.",
            "source_type": "blog",
            "source_url": "https://www.homeandtome.org/babyletto-pure-core-2-stage-crib-mattress-review-a-parents-deep-dive-into-safety-and-comfort/",
            "source_read_at": "2026-10-21T10:11:06.840Z"
          }
        },
        {
          "column": "Certification",
          "fact": {
            "field": "Store certifications",
            "value": "The store's structured product data lists Eco-Friendly, GREENGUARD, GREENGUARD Gold, BPA Free, No Added Formaldehyde, No Known Harmful Phthalates, No PFAS, Low VOC, Fire Retardant Free and Recycled Materials.",
            "stated_as": "\"name\":\"Certifications\",\"value\":[\"Eco-Friendly\",\"GREENGUARD\",\"GREENGUARD Gold\",\"BPA Free\",\"No Added Formaldehyde\",\"No Known Harmful Phthalates\",\"No PFAS\",\"Low VOC\",\"Fire Retardant Free\",\"Recycled Materials\"]",
            "source_type": "guide",
            "source_url": "https://modern-nursery-test-store.myshopify.com/products/babyletto-pure-core-non-toxic-crib-mattress-with-hybrid-cover",
            "source_read_at": "2026-10-21T10:10:49.798Z"
          }
        }
      ]
    },
    {
      "rank": 4,
      "merchant": {
        "slug": "megababiesusa-com",
        "display_name": "megababiesusa.com"
      },
      "product_id": "gid://shopify/Product/8827090993406",
      "name": "Moonlight Slumber Little Dreamer Crib Mattress",
      "url": "/products/ucp/megababiesusa-com/8827090993406",
      "why": "The blog noticed no strong new-mattress smell and said it was ready for the nursery almost immediately.",
      "cells": [
        {
          "column": "Unboxing smell",
          "fact": {
            "field": "New-mattress smell",
            "value": "The blog noticed no strong new-mattress smell and said it was ready for the nursery almost immediately.",
            "stated_as": "The blog noticed no strong new-mattress smell and said it was ready for the nursery almost immediately.",
            "source_type": "blog",
            "source_url": "https://www.thebabyverse.org/moonlight-slumber-little-dreamer-dual-sided-crib-mattress-review-the-ultimate-sleep-investment-for-your-growing-child/",
            "source_read_at": "2026-10-19T18:19:30.134Z"
          }
        },
        {
          "column": "Certification",
          "fact": null
        }
      ]
    },
    {
      "rank": 5,
      "merchant": {
        "slug": "strolleria-com",
        "display_name": "strolleria.com"
      },
      "product_id": "gid://shopify/Product/8189249716298",
      "name": "Naturepedic Verse Organic Mattress (Verse Organic Kids and Teen Mattress)",
      "url": "/products/ucp/strolleria-com/8189249716298",
      "why": "Owners report a smell when the mattress is first unpacked that lingers a while, described as earthy rather than chemical, and said not to feel worrying.",
      "cells": [
        {
          "column": "Unboxing smell",
          "fact": {
            "field": "smell on unpacking",
            "value": "Owners report a smell when the mattress is first unpacked that lingers a while, described as earthy rather than chemical, and said not to feel worrying.",
            "stated_as": "Owners report a smell when the mattress is first unpacked that lingers a while, described as earthy rather than chemical, and said not to feel worrying.",
            "source_type": "review",
            "source_url": "https://redditrecs.com/mattress/model/naturepedic-verse/",
            "source_read_at": "2026-10-15T09:36:57.073Z"
          }
        },
        {
          "column": "Certification",
          "fact": null
        }
      ]
    }
  ]
}