{
  "schema_version": "compare-page.v2",
  "page_id": "thin-kids-mattresses-for-a-shallow-crib",
  "url": "https://robotrunk.com/compare/want/thin-kids-mattresses-for-a-shallow-crib",
  "title": "Thin Kids' Mattresses for a Shallow Crib",
  "question": "Which children's mattresses are thin enough for a shallow crib?",
  "answer": "Lullaby Earth Breathe Safe Breathable Mini Crib Mattress: The maker gives dimensions of 23.5 by 37.5 by 3 inches, agreeing with Strolleria; the other store listing and Healthline give approximately 24 by 38 by 6 inches, so the sources disagree. One store listing says the mattress measures about 24 by 38 by 6 inches, which conflicts with the 3-inch thickness given by the maker and the other store.\nMoonlight Slumber Starlight Dream Crib Mattress (Compressed & Rolled): The mattress is 5 inches deep.\nMoonlight Slumber Little Dreamer Mini Crib Mattress: The mattress measures 24 inches by 38 inches by 5 inches. The review says the 5-inch depth is thicker than many mini crib mattresses, which some buyers may see as more supportive and others as a fit concern for shallower cribs.",
  "kind": "mattress",
  "market": "US",
  "generated_at": "2026-10-27T20:07:50.914Z",
  "columns": [
    "Depth",
    "Stages",
    "Weight"
  ],
  "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": "Moonlight Slumber Little Dreamer Mini Crib Mattress",
      "field": "dimensions",
      "value": "The mattress measures 24 inches by 38 inches by 5 inches.",
      "stated_as": "24\" x 38\" x 5\"",
      "source_type": "listing",
      "source_url": "https://top-stroll.myshopify.com/products.json",
      "source_read_at": "2026-10-18T19:37:33.814Z"
    },
    {
      "ref": "p1.f4",
      "product": "Moonlight Slumber Little Dreamer Mini Crib Mattress",
      "field": "thickness and fit",
      "value": "The review says the 5-inch depth is thicker than many mini crib mattresses, which some buyers may see as more supportive and others as a fit concern for shallower cribs.",
      "stated_as": "The review says the 5-inch depth is thicker than many mini crib mattresses, which some buyers may see as more supportive and others as a fit concern for shallower cribs.",
      "source_type": "review",
      "source_url": "https://smallspacebaby.com/product/B07PNRVCPF",
      "source_read_at": "2026-10-19T18:26:04.112Z"
    },
    {
      "ref": "p1.f8",
      "product": "Moonlight Slumber Little Dreamer Mini Crib Mattress",
      "field": "dual-sided use",
      "value": "The dual-sided design is presented as a way to flip from a firmer infant side to a plusher toddler side instead of buying a second mattress.",
      "stated_as": "The dual-sided design is presented as a way to flip from a firmer infant side to a plusher toddler side instead of buying a second mattress.",
      "source_type": "review",
      "source_url": "https://smallspacebaby.com/product/B07PNRVCPF",
      "source_read_at": "2026-10-19T18:26:04.112Z"
    },
    {
      "ref": "p4.f4",
      "product": "Moonlight Slumber Starlight Dream Crib Mattress (Compressed & Rolled)",
      "field": "sleep system",
      "value": "It has a two-stage sleep system.",
      "stated_as": "Two-stage sleep system.",
      "source_type": "listing",
      "source_url": "https://top-stroll.myshopify.com/products.json",
      "source_read_at": "2026-10-18T19:37:33.814Z"
    },
    {
      "ref": "p4.f9",
      "product": "Moonlight Slumber Starlight Dream Crib Mattress (Compressed & Rolled)",
      "field": "thickness",
      "value": "The mattress is 5 inches deep.",
      "stated_as": "5” deep mattress is wrapped in a woven fire barrier with no spray-on FR chemicals.",
      "source_type": "listing",
      "source_url": "https://top-stroll.myshopify.com/products.json",
      "source_read_at": "2026-10-18T19:37:33.814Z"
    },
    {
      "ref": "p6.f1",
      "product": "Lullaby Earth Breathe Safe Breathable Mini Crib Mattress",
      "field": "claimed size (conflicting)",
      "value": "One store listing says the mattress measures about 24 by 38 by 6 inches, which conflicts with the 3-inch thickness given by the maker and the other store.",
      "stated_as": "These natural crib mattresses measure approximately 24\" x 38\" x 6\" for a snug fit in most standard miniature cribs and nursery furniture",
      "source_type": "listing",
      "source_url": "https://strolleria.myshopify.com/products.json",
      "source_read_at": "2026-10-14T20:08:47.220Z"
    },
    {
      "ref": "p6.f2",
      "product": "Lullaby Earth Breathe Safe Breathable Mini Crib Mattress",
      "field": "weight",
      "value": "The mattress weighs only 7 lbs thanks to a lightweight WaveSupport core, which makes sheet changes easier.",
      "stated_as": "Weighing only 7 lbs., the mattresses feature a lightweight WaveSupport™ core for easy handling and crib sheet changes.",
      "source_type": "guide",
      "source_url": "https://strolleria.myshopify.com/products/lullaby-earth-breathe-safe-breathable-mini-crib-mattress",
      "source_read_at": "2026-10-14T22:03:03.690Z"
    },
    {
      "ref": "p6.f3",
      "product": "Lullaby Earth Breathe Safe Breathable Mini Crib Mattress",
      "field": "dimensions",
      "value": "The maker gives dimensions of 23.5 by 37.5 by 3 inches, agreeing with Strolleria; the other store listing and Healthline give approximately 24 by 38 by 6 inches, so the sources disagree.",
      "stated_as": "23 1/2\" x 37 1/2\" x 3\"",
      "source_type": "guide",
      "source_url": "https://www.lullabyearth.com/breathe-safe-breathable-mini-crib-mattress",
      "source_read_at": "2026-10-14T22:03:04.883Z"
    },
    {
      "ref": "p6.f9",
      "product": "Lullaby Earth Breathe Safe Breathable Mini Crib Mattress",
      "field": "two-stage firmness",
      "value": "The maker describes a two-stage mattress with a firm infant side and a cushion-firm toddler side; Healthline says it is not flippable, so the sources disagree.",
      "stated_as": "it’s a 2-stage mattress with a firm infant side and a cushion-firm toddler side.",
      "source_type": "guide",
      "source_url": "https://www.lullabyearth.com/breathe-safe-breathable-mini-crib-mattress",
      "source_read_at": "2026-10-14T22:03:04.883Z"
    }
  ],
  "rows": [
    {
      "rank": 1,
      "merchant": {
        "slug": "strolleria-com",
        "display_name": "strolleria.com"
      },
      "product_id": "gid://shopify/Product/7653930762314",
      "name": "Lullaby Earth Breathe Safe Breathable Mini Crib Mattress",
      "url": "/products/ucp/strolleria-com/7653930762314",
      "why": "The maker gives dimensions of 23.5 by 37.5 by 3 inches, agreeing with Strolleria; the other store listing and Healthline give approximately 24 by 38 by 6 inches, so the sources disagree.",
      "cells": [
        {
          "column": "Depth",
          "fact": {
            "field": "dimensions",
            "value": "The maker gives dimensions of 23.5 by 37.5 by 3 inches, agreeing with Strolleria; the other store listing and Healthline give approximately 24 by 38 by 6 inches, so the sources disagree.",
            "stated_as": "23 1/2\" x 37 1/2\" x 3\"",
            "source_type": "guide",
            "source_url": "https://www.lullabyearth.com/breathe-safe-breathable-mini-crib-mattress",
            "source_read_at": "2026-10-14T22:03:04.883Z"
          }
        },
        {
          "column": "Stages",
          "fact": {
            "field": "two-stage firmness",
            "value": "The maker describes a two-stage mattress with a firm infant side and a cushion-firm toddler side; Healthline says it is not flippable, so the sources disagree.",
            "stated_as": "it’s a 2-stage mattress with a firm infant side and a cushion-firm toddler side.",
            "source_type": "guide",
            "source_url": "https://www.lullabyearth.com/breathe-safe-breathable-mini-crib-mattress",
            "source_read_at": "2026-10-14T22:03:04.883Z"
          }
        },
        {
          "column": "Weight",
          "fact": {
            "field": "weight",
            "value": "The mattress weighs only 7 lbs thanks to a lightweight WaveSupport core, which makes sheet changes easier.",
            "stated_as": "Weighing only 7 lbs., the mattresses feature a lightweight WaveSupport™ core for easy handling and crib sheet changes.",
            "source_type": "guide",
            "source_url": "https://strolleria.myshopify.com/products/lullaby-earth-breathe-safe-breathable-mini-crib-mattress",
            "source_read_at": "2026-10-14T22:03:03.690Z"
          }
        }
      ]
    },
    {
      "rank": 2,
      "merchant": {
        "slug": "megababiesusa-com",
        "display_name": "megababiesusa.com"
      },
      "product_id": "gid://shopify/Product/8827092467966",
      "name": "Moonlight Slumber Starlight Dream Crib Mattress (Compressed & Rolled)",
      "url": "/products/ucp/megababiesusa-com/8827092467966",
      "why": "The mattress is 5 inches deep.",
      "cells": [
        {
          "column": "Depth",
          "fact": {
            "field": "thickness",
            "value": "The mattress is 5 inches deep.",
            "stated_as": "5” deep mattress is wrapped in a woven fire barrier with no spray-on FR chemicals.",
            "source_type": "listing",
            "source_url": "https://top-stroll.myshopify.com/products.json",
            "source_read_at": "2026-10-18T19:37:33.814Z"
          }
        },
        {
          "column": "Stages",
          "fact": {
            "field": "sleep system",
            "value": "It has a two-stage sleep system.",
            "stated_as": "Two-stage sleep system.",
            "source_type": "listing",
            "source_url": "https://top-stroll.myshopify.com/products.json",
            "source_read_at": "2026-10-18T19:37:33.814Z"
          }
        },
        {
          "column": "Weight",
          "fact": null
        }
      ]
    },
    {
      "rank": 3,
      "merchant": {
        "slug": "megababiesusa-com",
        "display_name": "megababiesusa.com"
      },
      "product_id": "gid://shopify/Product/8827090075902",
      "name": "Moonlight Slumber Little Dreamer Mini Crib Mattress",
      "url": "/products/ucp/megababiesusa-com/8827090075902",
      "why": "The review says the 5-inch depth is thicker than many mini crib mattresses, which some buyers may see as more supportive and others as a fit concern for shallower cribs.",
      "cells": [
        {
          "column": "Depth",
          "fact": {
            "field": "dimensions",
            "value": "The mattress measures 24 inches by 38 inches by 5 inches.",
            "stated_as": "24\" x 38\" x 5\"",
            "source_type": "listing",
            "source_url": "https://top-stroll.myshopify.com/products.json",
            "source_read_at": "2026-10-18T19:37:33.814Z"
          }
        },
        {
          "column": "Stages",
          "fact": {
            "field": "dual-sided use",
            "value": "The dual-sided design is presented as a way to flip from a firmer infant side to a plusher toddler side instead of buying a second mattress.",
            "stated_as": "The dual-sided design is presented as a way to flip from a firmer infant side to a plusher toddler side instead of buying a second mattress.",
            "source_type": "review",
            "source_url": "https://smallspacebaby.com/product/B07PNRVCPF",
            "source_read_at": "2026-10-19T18:26:04.112Z"
          }
        },
        {
          "column": "Weight",
          "fact": null
        }
      ]
    }
  ]
}