Collection: Merino Wool Sleeping Bags

Our Merino Sleeping Bags are available in two convenient weights All Season (18 - 28°C) and Winter (15 - 20°C) to keep your little one cosy all year round.

They come in 2 sizes, Baby (3m-2 years) and Toddler (2-4 years) so you can enjoy sweet sleep right up until your little one is ready to transition to a big bed.

Why not bundle & save with our awesome Billie + Bobbie bundles - available to mix and match across All Season and Winter!

What are the benefits of a baby sleeping bag or sleep sack?

They’re a safe sleep association

A baby sleeping bag, also known as a sleep sack or sleep suit becomes part of the bedtime routine and so your child learns that when the sleeping bag comes out, it’s time for bed!

It is an invaluable tool for helping your baby get a safe, warm, comfortable night’s rest. Putting this on your little one night after night starts to represent a time to go to sleep, as well as providing adequate warmth and comfort throughout the night.

What you should look for when buying a baby sleep sack:-

Temperature Regulating

When it comes to choosing a baby sleeping bag, it’s important to take into account the climate you live in and the temperature of your baby’s room. Most sleeping bags come in different TOG strengths, TOG stands for ‘Thermal Overall Grade’ which simply provides a measure of warmth; the higher the number, the warmer the garment.  You may have noticed that our sleeping bags are not TOG rated like most other brands but instead have a temperature guide.  This is because Merino Wool has unique thermo-regulating properties that respond to the environment, keeping your baby warm when it’s cold, and cool when it’s hot.  This is also the reason why our regular sleeping bag is suitable for use over all seasons (effectively the TOG rating changes depending on the external temperature), whereas with TOG rated garments you are most likely to need various weights to cater for different temperatures.


It’s always best to buy from reputable brands when buying a sleeping bag or sleep sack, as they’re made from durable, breathable materials. You should never let your baby go to sleep in anything with a hood as this can put your baby at risk of overheating. You should also always look for a sleeping bag that’s hip-healthy, with an extra wide shape and garment construction.

Less waking during the night

They ensure a better night’s sleep for all the family as they can’t be kicked off leading to waking in the night because they are cold.


The most important factor when it comes to comfort is the material used. Many sleeping bags are made from polyester, so it's important to check the label as natural fibres are breathable and therefore offer superior comfort over synthetics like polyester. You also want to ensure the zipper is covered with fabric at the top of the suit near the neck, to protect baby's skin.


Overall functionality is important when it comes to finding the perfect sleeping bag, as you need to be able to access nappies with a two-way zipper, and dress baby quickly and easily at bedtime.

Baby sleeping bag features to consider

Easy Care

A machine-washable sleeping bag is a must, in case accidents happen you can wash as much as you need without worrying about your sleep suit losing its shape or softness.


A sleeping bag that has adjustable sizing is the best way to get bang for your buck, as it has the ability to grow with your baby.