Are weighted baby sleeping bags allowed under EN 16781?

Does the 2018 standard allow weighted bags?

BS EN 16781:2018 is the British adoption of the European cot-sleep-bag standard. The Lullaby Trust lists it as the safety standard for baby sleeping bags (sleepbags). The published scope covers a full-length fabric bag with a neck opening and armholes, for unsupervised sleep in a cot until a child can climb out (about 24 months).

The 2018 text sets design, mechanical, chemical, thermal, fire, hygiene and user-information rules. It caps thermal resistance and sizes the neck opening against the child's height. It does not contain a sentence that licences adding extra mass so the bag presses on the body. A Nested-Bean-style bag sold in the UK with a TOG figure can still print a standard code. That print is a maker's claim about the bag as tested, not a line in the standard that says weighting is in scope.

The Lullaby Trust states there is no safety standard related to sudden infant death syndrome (SIDS). Meeting a British Standard means the product passed the tests in that standard. It is not a SIDS assessment.

What would the unpublished revision change?

A November 2025 BRC associate briefing by UL Solutions says EN 16781 is under revision more than six years after first publication. The proposed new version is not approved yet and was still under discussion (a CEN TC 248 WG34 meeting was listed for February 2025). UL describes the draft as hazard-based and restructured.

Among the possible changes, UL writes that weighted sleep bags would not be permitted. It defines those as sleep bags in which one or more areas include additional functional weighting for the sole purpose of increasing the pressure on the body. Other draft points listed include a fourth height band for the neck opening, a minimum length, and updated tests for attached components.

UL also says that after a new version is published and implemented there should be an 18-month transition from the date of availability. Until a revised BS EN 16781 is published and cited, the document on sale in Britain remains the 2018 edition. A shop label that still says BS EN 16781:2018 is pointing at that current text, not at the unpublished draft.

What does the Lullaby Trust say about weighted bags?

On How to dress your baby for sleep (reviewed 28 February 2026), the charity writes: weighted swaddles, blankets and sleeping bags are not recommended for babies under one year because of the risk of overheating and head covering. The same page adds that they can also restrict breathing by pressing on the delicate chest of a baby.

The Lullaby Trust product guide repeats that weighted swaddles, weighted blankets and weighted sleeping bags are not recommended under one year for overheating and head-covering reasons. The charity's safer-sleep overview lists no weighted or bulky bedding among the items to keep out of a clear cot.

• Under one year is the age cut the charity uses for that weighted-bedding line — it is not the same as the ~24-month climb-out age in EN 16781.
• Overheating and head covering are the hazards named on the dress-for-sleep page; chest pressure is named there too.
• A British Standard code is still something the charity asks parents to look for on a sleep bag. That request sits beside the separate weighted-bedding line, not instead of it.

Current 2018 text versus the unpublished draft

In shortIn short: the 2018 standard does not give weighted bags a published green light. The draft UL describes would ban functional weighting. The Lullaby Trust's own line for under-ones is already 'not recommended', for overheating, head covering and chest pressure. A TOG print does not override that.

Does a TOG rating or an EN 16781 mark settle it?

No. TOG is a measure of insulation. The Lullaby Trust defines it that way on the dress-for-sleep page: the higher the number, the warmer the product. Weighting that is added to press on the chest is a different product feature. A bag can carry both a TOG and extra mass. The warmth figure does not describe the pressure.

An EN 16781 or UKCA / CE mark on a hang-tag is the maker's declaration about the tests they claim. The Lullaby Trust is explicit that even if a product meets the relevant British Standards, that will not necessarily reduce SIDS risk. Official records of a standard code are not the same as the charity's weighted-bedding position.

How should I read a weighted bag sold in the UK?

1. 1
   Find the standard line Look on the sewn-in label and the swing ticket for BS EN 16781:2018 (or EN 16781:2018). If the year is missing or the code is a clothing standard only, you are not looking at a claimed cot-sleep-bag test pack.
2. 2
   Separate TOG from mass Write down the printed TOG and any claim about beads, pellets or 'gentle weight'. TOG is insulation. Extra mass is the feature the draft would treat as functional weighting.
3. 3
   Read the charity line beside the standard The Lullaby Trust's under-one position on weighted swaddles, blankets and sleeping bags sits on the same site that lists BS EN 16781:2018. The two sentences answer different questions.
4. 4
   Watch the revision, do not pre-date it Until BSI publishes a new edition, shops can still sell against 2018. A future ban in a draft is not already the current text.

This page does not grade brands and does not say a listed standard code means a weighted bag matches Lullaby Trust safer-sleep advice. Not found on a recall list is also not an all-clear.