LEELALU

Free tool · Safe sleep, birth to 12 months

Safe sleep checklist

Nine reviewed lines, one slow walk around the crib. Tap any line to see the exact reviewed wording and the source document behind it. Check off what is already true tonight.

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How this works

A private walkthrough, not a test.

Checkmarks live only in this browser

Nothing you check leaves your device. There is no account, no tracking, and nothing is sent anywhere. Clearing your browser data clears the checkmarks too.

Sources on every line

Each item is the reviewed wording of a named source, shown verbatim. Open any line to read the full statement, the age range it applies to, and a link to the exact document.

Unchecked is information, not failure

Most families find a line or two to adjust. That is the point of a checklist. Fix what you can tonight and come back for the rest.

The checklist

Walk the sleep space, line by line.

Position, surface, what is in the space, the room, and the habits around it. Tap a line for its source; check the box when it is true for your setup.

  1. Put your baby on their back for all naps and at night.AAP HealthyChildren · 0-12 months

    Reviewed wording: "Put your baby on their back for all naps and at night."

    Applies to: 0-12 months · Source: AAP HealthyChildren, A Parent's Guide to Safe Sleep · Reviewed by the LEELALU team (editorial review) · Reviewed: July 2026 · Status: current · Claim ID: safesleep.back_every_sleep.0_12m.v1

  2. A baby's sleep surface should be firm, flat, and level, covered with only a fitted sheet.NICHD Safe to Sleep · 0-12 months

    Reviewed wording: "A baby's sleep surface should be firm, flat, and level, covered with only a fitted sheet."

    Applies to: 0-12 months · Source: NICHD Safe to Sleep, Safe Sleep Environment · Reviewed by the LEELALU team (editorial review) · Reviewed: July 2026 · Status: current · Claim ID: safesleep.firm_flat_surface.v1

  3. Keep pillows, comforters, quilts, blankets, stuffed toys, and weighted blankets or weighted sleep products out of the baby's sleep area.NICHD Safe to Sleep · 0-12 months

    Reviewed wording: "Keep pillows, comforters, quilts, blankets, stuffed toys, and weighted blankets or weighted sleep products out of the baby's sleep area."

    Applies to: 0-12 months · Source: NICHD Safe to Sleep, Safe Sleep Environment · Reviewed by the LEELALU team (editorial review) · Reviewed: July 2026 · Status: current · Claim ID: safesleep.bare_sleep_area.v1

  4. To avoid overheating, dress your baby in only about one more layer than you would wear in the same environment.AAP HealthyChildren · 0-12 months

    Reviewed wording: "To avoid overheating, dress your baby in only about one more layer than you would wear in the same environment."

    Applies to: 0-12 months · Source: AAP HealthyChildren, A Parent's Guide to Safe Sleep · Reviewed by the LEELALU team (editorial review) · Reviewed: July 2026 · Status: current · Claim ID: safesleep.one_more_layer.v1

  5. A comfortable room helps prevent overheating; UK NHS guidance suggests keeping the room around 16 to 20°C (about 61 to 68°F) as a practical guide.NHS, Sudden infant death syndrome (SIDS) · 0-3 months

    Reviewed wording: "A comfortable room helps prevent overheating; UK NHS guidance suggests keeping the room around 16 to 20°C (about 61 to 68°F) as a practical guide. US authorities emphasize keeping the baby 'not too hot' with the head uncovered rather than naming a temperature, so use comfort and the one-extra-layer rule alongside any number."

    Applies to: 0-3 months · Source: NHS, Sudden infant death syndrome (SIDS) · Reviewed by the LEELALU team (editorial review) · Reviewed: July 2026 · Status: current · Claim ID: sleep.room_temperature.0_3m.v1

  6. Room sharing, with the baby on their own separate sleep surface in the parents' room, is recommended for at least the first 6 months and can decrease the risk of SIDS by as much as 50 percent.AAP HealthyChildren · 0-6 months

    Reviewed wording: "Room sharing, with the baby on their own separate sleep surface in the parents' room, is recommended for at least the first 6 months and can decrease the risk of SIDS by as much as 50 percent."

    Applies to: 0-6 months · Source: AAP HealthyChildren, A Parent's Guide to Safe Sleep · Reviewed by the LEELALU team (editorial review) · Reviewed: July 2026 · Status: current · Claim ID: safesleep.room_share_6m.v1

  7. Do not sleep with your baby on a sofa or in an armchair.NHS · 0-12 months

    Reviewed wording: "Do not sleep with your baby on a sofa or in an armchair."

    Applies to: 0-12 months · Source: NHS, Reduce the risk of sudden infant death syndrome (SIDS) · Reviewed by the LEELALU team (editorial review) · Reviewed: July 2026 · Status: current · Claim ID: safesleep.no_sofa_sleep.v1

  8. Do not smoke during pregnancy and do not let anyone smoke around your baby; smoke exposure raises the risk of sudden infant death.NHS · pregnancy-12 months

    Reviewed wording: "Do not smoke during pregnancy and do not let anyone smoke around your baby; smoke exposure raises the risk of sudden infant death."

    Applies to: pregnancy-12 months · Source: NHS, Reduce the risk of sudden infant death syndrome (SIDS) · Reviewed by the LEELALU team (editorial review) · Reviewed: July 2026 · Status: current · Claim ID: safesleep.smoke_free.v1

  9. Offering a pacifier at nap time and bedtime helps to reduce the risk of SIDS.AAP HealthyChildren · 0-12 months

    Reviewed wording: "Offering a pacifier at nap time and bedtime helps to reduce the risk of SIDS."

    Applies to: 0-12 months · Source: AAP HealthyChildren, Pacifiers and Thumb Sucking · Reviewed by the LEELALU team (editorial review) · Reviewed: July 2026 · Status: current · Claim ID: safesleep.pacifier_sids.v1

Education, not diagnosis

This page is education, not diagnosis. If something feels wrong, call your pediatrician (or your OB for your own body). In an emergency in the US, call 911.

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Reviewed by the LEELALU team (editorial review) · Updated August 3, 2026 · Sources named above.