Can a nursery put a blanket on top of a sleeping bag?

What do NHS and the Lullaby Trust say about extra bedding?

The NHS Best Start in Life safer-sleep page describes baby sleeping bags as a way to stop a baby wriggling under covers. After the commercial tog ranges it states: depending on room temperature and tog, you can adjust clothing as necessary. There should be no other bedding.

The Lullaby Trust says the same thing twice. On safer sleep in early years settings it writes that a baby sleep bag is a good option because it reduces the risk of sheets and blankets being kicked off and covering the head, and that there is no need to use any additional bedding when using a baby sleep bag. On how to dress your baby for sleep it adds: if you are using a baby sleeping bag, don’t add extra blankets on top. If the baby feels cold, add a clothing layer or choose a higher tog.

Those lines are about extra bedding with a bag. They are not a brand-by-brand product test. Official records show the wording; they do not grade your nursery’s stock of cellular blankets.

What does the EYFS wording allow — bag or tucked blanket?

The September 2026 EYFS update, set out on the DfE safer-sleep page and in the Foundation Years FAQ, lists one sleep-space contents rule for children under two:

• A firm, flat, waterproof mattress, and
• Lightweight bedding firmly tucked around the child no higher than the shoulders (Foundation Years FAQ: below their shoulders), or
• Alternatively, a well-fitted baby sleep bag, used after checking the manufacturer’s recommendations.

Where blankets are used, the child is placed feet-to-foot with blankets tucked in. Cots must not contain extra items such as toys, pillows, extra blankets, bumpers, wedges or straps. The framework presents tucked bedding and a sleep bag as alternatives, not a stack.

What do nursery policies say about a blanket plus a bag?

If you send both a bag and a cellular blanket “just in case”, staff who follow Bristol-style wording will use one or the other. That is the policy, not a comment on your washing pile.

What if my baby feels cold in the nursery sleep room?

Lullaby Trust early-years guidance aims for a room between 16–20°C. The same pages say the way to check temperature is the chest or the back of the neck (hands and feet are usually cooler). If the skin is hot or sweaty, remove a layer of clothes or bedding. If the chest feels cold, the dress-for-sleep page says add a clothing layer or a higher tog bag — not a blanket on top of the bag.

NDNA tells settings to agree clothing, tog and room temperature with parents before using sleep bags. A bag that is right for a 16°C bedroom at home can be too warm in a 20°C baby room. The next step is a different tog or fewer layers underneath, agreed in writing.

What should I send from home?

1. 1
   Ask which option the room uses Tucked cellular blanket, parent-owned sleep bag, or setting-owned bag. Send one system, labelled with your child’s name.
2. 2
   If you send a bag, send the tog the room asked for Include the manufacturer’s tog guide if it is still on the hang tag. Do not assume a winter 2.5 tog belongs in a warm baby room.
3. 3
   Leave the spare blanket at home unless staff ask for tucked bedding only A cellular blanket in the bag tray is how the bag-plus-blanket mix-up starts. If the setting uses tucked bedding instead of a bag, they will say so.
4. 4
   Write the rule on the all-about-me form One line is enough: sleeps in a named tog bag, no extra bedding, following Lullaby Trust and NHS wording. Staff can show new cover staff the same line.

In shortIn short: NHS says no other bedding with a sleeping bag. The Lullaby Trust says no extra blankets on top. EYFS lists tucked bedding or a well-fitted bag. If your baby feels cold, those pages point to another clothing layer or a higher tog, agreed with the setting.