Is Your Baby's Sleep Space Working Against Them?

When you're in the thick of newborn life, sleep safety can feel overwhelming. There's so much advice, and a lot of it is conflicting. But when you strip it back, a safe sleep space comes down to a few simple principles — and getting them right can genuinely change how well your baby sleeps.

Here's what I keep coming back to.

A firm, flat surface — no exceptions

This is the one I see parents get wrong most often, usually with the best intentions. A soft mattress, a pillow insert, a padded liner — they feel cosy, but they're not safe for a baby who can't yet move their head independently.

Baby needs a firm, flat mattress with a fitted sheet. That's it. Nothing else in the crib — no bumpers, no pillows, no loose blankets. It sounds stark, but it's what keeps them safe, and honestly? Babies sleep better on a firm surface anyway. They're not looking for comfort the way we are.

Temperature matters more than most people realise

The recommended room temperature for a sleeping baby is 16–20°C. Too warm is actually a bigger risk than too cold — overheating is linked to disrupted sleep and, more seriously, is a known risk factor for SIDS.

A simple room thermometer is one of the most useful things you can have in a nursery. Check it before you put baby down, not after.

What your baby is wearing matters too

Once you know the room temperature, you can dress baby appropriately. The general rule is one more layer than you'd wear — but fabric choice is just as important as layering.

Synthetic fabrics trap heat. They don't breathe, they don't regulate temperature, and they can cause baby to overheat even in a cool room.

This is why I only use organic cotton for my baby's sleep. It's breathable, it's soft against newborn skin, and it does what it's supposed to do — keep baby comfortable without trapping heat. Our organic cotton swaddles and organic cotton bedding are what we reach for every single night. Not because they're ours, but because the fabric genuinely makes a difference.

A well-fitted swaddle in breathable cotton also removes the need for loose blankets in the crib — which is exactly the point.

The TOG rating guide (quick reference)

Back to sleep, every time

Always place baby on their back to sleep — for every nap, every night sleep, until they can roll both ways independently. This is one of the most evidence-backed ways to reduce the risk of SIDS.

The short version

A safe sleep space doesn't need to be complicated or expensive. It needs to be:

• Firm and flat, with nothing loose in the crib
• The right temperature (16–20°C)
• Dressed in breathable, natural fabrics
• Baby on their back

Get those four things right and you've done the most important work. Everything else is detail.