Sleep bag, blanket or swaddle: what's safest for your babe?

By Stellar Baby Updated 7 July 2026 2 min read

The safe-sleep lowdown on what actually goes in the cot.

You've sorted the TOG. Now the next question: what does your little babe actually sleep in? Bag, blanket, swaddle. There are a lot of opinions and not much clarity, so here's the safe-sleep version, minus the noise.

The safe-sleep starting point

Red Nose Australia's guidance leans to a safe infant sleeping bag as the simplest way to keep your babe cosy without loose bedding in the cot. Loose blankets, quilts and doonas are what safe-sleep guidance steers away from, because they can cover the face. So most of the decision comes down to how you keep them cosy without anything loose.

Sleep bags: the safe-sleep favourite

A well fitted sleeping bag has a firm neck, armholes, no hood, it can't slip over your babe's face, and it can't be kicked off or bunched up. It also comes with a TOG rating, so you can match the warmth to the room (that's where our TOG guide and app come in, more on that below). For most families, this is the easiest safe option from newborn onward.

Swaddles and wraps: fine, with a use-by

Wrapping can help settle a newborn. Red Nose's safe-wrapping guidance covers how to do it comfortably, and advises moving on from swaddling once your babe shows any sign of rolling, with an arms out sleeping bag taking over from there.

Blankets: the one to be careful with

Loose bedding is what safe-sleep guidance steers away from. Red Nose's guidance on using a blanket is to keep it light and tucked in firmly, with your babe positioned so they can't wriggle underneath. Honestly, a sleeping bag removes the guesswork here, which is why it's the go-to.

Matching it to the room

Whatever you choose, the warmth still needs to suit the environment. That's the bit we make easy: Orbie reads your babe's live temperature and gives you the suggested TOG and layers for that exact reading, so the bag you reach for actually matches the room, not a guess. View the Stellar Baby TOG guide.

A few things we always say

  • Red Nose suggests checking your babe by feeling the chest or back of the neck rather than hands and feet.
  • For the sleep environment, we always point you to Red Nose Australia's safe sleeping guidance.
  • You know your babe best. If something doesn't feel right, trust your gut.

This article is general information, not medical advice. If you're ever worried about your little babe, trust your gut and reach out to your GP, child health nurse, or Pregnancy, Birth and Baby on 1800 882 436.

Sources

A fitted sleeping bag keeps your babe cosy without loose bedding in the cot, which is why safe-sleep guidance leans toward it.

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Common questions

Is a sleeping bag safer than a blanket?

A fitted sleeping bag avoids loose bedding, which is why safe-sleep guidance leans toward it. Red Nose's guidance on using a blanket is to keep it light and tucked in firmly, with your babe positioned so they can't wriggle underneath.

When should I stop swaddling?

Red Nose advises moving on from swaddling once your babe shows signs of rolling, with a sleeping bag a popular next step. Red Nose's safe-sleep guidance has the full detail.

How do I know which TOG sleeping bag to use?

Match it to the environment temperature. Our TOG guide and the app do this for you off the live reading.