Every parent knows that feeling: you finally settle your baby, tiptoe out, and then creep back to check they are still breathing. Those instincts are there for a reason, and the reassuring news is that the practical habits which keep babies safe while they sleep are simple, well researched and easy to fold into everyday family life.
Why Safe Sleep Advice Matters
Sudden infant death syndrome (SIDS) is rare, but it is one of the most devastating things that can happen to a family. Research consistently points to a small number of habits that lower the risk considerably. Put simply: babies sleep safest on their backs, in their own clear sleep space, in a room that is smoke-free and comfortably cool. Everything below builds on those four foundations.
Always Place Your Baby On Their Back
The back position is the single most protective thing you can do. It applies to every sleep, not just bedtime — naps count too.
- Back for every sleep, day and night, until your baby is around a year old.
- Keep the head uncovered so your baby can lose heat and breathe freely.
- Once your baby can roll both ways confidently (often around five or six months), let them find their own position during sleep — but still put them down on their back.
- Share a room, not a bed for the first six months. A cot or Moses basket beside your bed means you can respond quickly and easily.
Avoid falling asleep with your baby on a sofa or armchair, which carries a particularly high risk. If you do share a bed, speak to your midwife or health visitor first, as bed-sharing is not advised if anyone has been drinking, taken medication that causes drowsiness, smokes, or if your baby was born prematurely or at a low birth weight.
The Clear Cot: What Belongs In It
A cot should look a little bare — and that is exactly the point. A clear sleep surface means nothing can cover your baby's face or trap heat.
- A firm, flat mattress with a well-fitting sheet, in a cot, crib or Moses basket that meets current safety standards.
- Place your baby feet to foot, with their feet near the bottom of the cot, so they cannot wriggle down under the covers.
- No pillows, duvets, cot bumpers, toys or comforters in the sleep space.
- Skip nests, pods, positioners and hammocks. They are not designed for unsupervised sleep and can be unsafe.
- Use a baby sleeping bag if you would like warmth without loose bedding — check the tog rating and make sure the neck opening fits snugly. Once your child is in a bed, keep bedding light and simple, and tuck it in securely.
Keeping The Room Cool And Avoiding Overheating
Overheating is linked to an increased risk of SIDS, and babies cannot yet regulate their temperature well. Aim for a room temperature of around 16 to 20°C.
- Check your baby's chest or the back of their neck, not their hands or feet, which are often cooler anyway. Damp hair, a sweaty neck, flushed cheeks or a heat rash are signs of overheating.
- Layer thoughtfully. In a room at 16 to 20°C, a vest and sleepsuit with a 2.5 tog sleeping bag is usually plenty. Remove layers if the room warms up.
- Keep cots away from radiators and out of direct sunlight, and open a window or use a fan to keep air moving.
- No hats indoors, and never use hot water bottles, electric blankets or wheat bags in a baby's bed.
Creating A Smoke-Free Environment
Smoking during pregnancy and exposure to second-hand smoke after birth both raise the risk of SIDS, along with chest infections, wheezing and ear problems. Keeping your baby's world smoke-free is one of the most valuable things you can do.
- Keep the home, car and any room your baby sleeps in completely smoke-free. Smoking in another room or with a window open does not remove the risk.
- Avoid vaping around your baby as well, and keep them away from people who are smoking outdoors.
- Smoke residue lingers on clothing, hair and soft furnishings, so wash hands and change outer layers after smoking before holding your baby.
- Ask for help to quit. Your midwife, health visitor or GP can point you towards free support, and it is never too late in pregnancy — or after birth — to make a difference.
Safe Sleep For Naps, Travel And Toddlers
The same principles follow your child through the day and into their toddler years.
- Naps need the same care as night-time sleep: back to sleep, on a firm flat surface, in a clear space.
- Car seats, bouncers, swings and slings are fine for short supervised periods, but transfer your baby to a flat, firm surface for any longer sleep.
- Travel cots should be used with their own mattress — never add a thicker one on top.
- Moving to a bed usually happens between 18 months and three years. Keep the room safe, use a bed guard if needed, and keep soft toys and heavy bedding out of the sleep space.
You do not need to get everything perfect. Safe sleep is built from small, consistent choices, and the fact that you are reading this shows how much you care.
Harriet Ellison