whichtog.comsleep layer recommendations
Baby sleeping bag TOG chart by room temperature
The right TOG and clothing layers for every room temperature from 12°C to 28°C.
The NHS and The Lullaby Trust recommend a room temperature of 16–20°C for safe sleep. Pick your room temperature for the full answer, with the reasons and safe-sleep checks.
| Room | Sleeping bag | What to wear |
|---|---|---|
| 12°C | 3.5 TOG | A long-sleeved bodysuit, a sleepsuit and an extra warm layer on top |
| 13°C | 2.5–3.5 TOG | A long-sleeved bodysuit and a sleepsuit (or full pyjamas) |
| 14°C | 2.5–3.5 TOG | A long-sleeved bodysuit and a sleepsuit (or full pyjamas) |
| 15°C | 2.5–3.5 TOG | A long-sleeved bodysuit and a sleepsuit (or full pyjamas) |
| 16°C | 2.5 TOG | A short-sleeved bodysuit and a sleepsuit (or full pyjamas) |
| 17°C | 2.5 TOG | A short-sleeved bodysuit and a sleepsuit (or full pyjamas) |
| 18°C | 1.5–2.5 TOG | A short-sleeved bodysuit and a sleepsuit (or full pyjamas) |
| 19°C | 1.5–2.5 TOG | A short-sleeved bodysuit and a sleepsuit (or full pyjamas) |
| 20°C | 1.5 TOG | A long-sleeved bodysuit |
| 21°C | 1.5 TOG | A long-sleeved bodysuit |
| 22°C | 1.0–1.5 TOG | A short-sleeved bodysuit |
| 23°C | 1.0–1.5 TOG | A short-sleeved bodysuit |
| 24°C | 0.5 TOG | A sleeveless bodysuit |
| 25°C | 0.5 TOG | A sleeveless bodysuit |
| 26°C | 0.5 TOG | A sleeveless bodysuit |
| 27°C | 0.5 TOG | A sleeveless bodysuit |
| 28°C | No bag, or 0.5 TOG at most | A nappy or sleeveless vest only |
Safe sleep checks
- Always place your child on their back to sleep.
- Check for overheating by feeling the chest or back of neck. Remove a layer if hot or sweaty.
- Do not put a hat on your baby indoors or for sleep — babies cool down through their head, and a hat can cause overheating.
- Do not use a sleeping bag with a cot duvet or loose blanket.
- These are general guides only — every child is different.
- Ideal room temperature for sleep is 16–20°C.
- Stop using a sleeping bag if damaged or if your child can climb out of the cot.