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25th Birthday
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Sleeping Bags with Feet
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Sleeping Bags

Baby Sleeping Bags for Safer, Comfortable Sleep

A baby sleeping bag is a practical alternative to loose blankets, helping your baby stay comfortably covered throughout naps and night-time sleep. It helps maintain a comfortable, consistent temperature throughout their sleep, while replacing loose blankets that can be kicked off or pulled over their face. Choosing the right TOG for the room temperature also helps reduce the risk of overheating.

Slumbersac baby sleeping bags are designed with a secure fit around the neck and armholes and plenty of room for little legs to kick and move naturally.

Which TOG Baby Sleeping Bag Do I Need?

TOG tells you how warm a sleeping bag is. While you may be looking for a summer or winter baby sleeping bag, the right TOG should always be chosen according to your baby's room temperature rather than the season alone.



➤ 0.5 TOG – above 24°C.
Our lightest summer baby sleeping bag, ideal for hot weather and warmer rooms.





➤ 1.0 TOG – 18–24°C.
A lightweight option for warmer rooms and mild spring, summer and autumn nights.





➤ 2.5 TOG – 15–21°C.
Our popular all-season baby sleeping bag, ideal for cooler rooms throughout autumn, winter and spring.





➤ 3.5 TOG – below 18°C.
Our warmest winter baby sleeping bag, designed for colder bedrooms




What your baby wears underneath will also depend on the room temperature and TOG. Our TOG Guide can help you choose the right warmth and what to wear underneath.

Always check your baby at the back of their neck or chest to make sure they feel comfortably warm rather than hot or sweaty. Hands and feet can naturally feel cooler.

How Should a Baby Sleeping Bag Fit?

Choosing the correct size is important for both safety and comfort. Don't size up so your baby can “grow into” their sleeping bag – it should fit securely now.

As a guide:



➤ The neckline should fit securely so your baby's head cannot pass through it.



➤ The armholes should be snug but comfortable.



➤ Your baby's feet should sit approximately three-quarters of the way down the sleeping bag, leaving plenty of space to kick and move.

Slumbersac sizing is based primarily on your child's height rather than age. Measure your child before ordering and use our Size Guide to find the right fit.

Why Parents love Slumbersac Baby Sleeping Bags

For over 25 years, Slumbersac has been creating sleeping bags designed around safety, comfort and everyday practicality.

✔ Safety Tested – Our baby sleeping bags are tested to BS EN 16781, with important safety requirements covering areas such as fit, neck openings and fastenings.



✔ TOGs for Every Room Temperature – Choose from 0.5, 1.0, 2.5 and 3.5 TOG sleeping bags for rooms ranging from warm summer temperatures to colder winter nights.



✔ Soft, Breathable Materials – Made using soft cotton and organic cotton fabrics, with OEKO-TEX® Standard 100 certified materials.



✔ Independently TOG Tested – Our TOG ratings are independently laboratory tested, so you can choose the right level of warmth with confidence.

✔ Practical Features – Secure necklines and armholes, zip covers, adjustable armholes and detachable sleeves on selected styles.



✔ Easy to Care For – Machine washable and tumble-dryer friendly for everyday family life.



✔ Sizes from Newborn Onwards – With sleeping bags designed to provide a secure fit and plenty of room for little legs to kick and move.

✔ Fun, Colourful Designs – From playful prints to simple plain colours, with plenty of designs to choose from.


You can read more about how our sleeping bags are tested in our Product Safety Guide.

Baby Sleeping Bag FAQs

Are baby sleeping bags safe for newborns?

Our newborn sleeping bags are designed for use from birth, provided your baby meets the size requirements and the sleeping bag fits securely around the neck and armholes. Always choose the correct size rather than sizing up.

What should my baby wear under a sleeping bag?

This depends on the room temperature and the TOG of the sleeping bag. In warmer temperatures, a lightweight bodysuit may be enough, while cooler rooms may require additional layers such as a sleepsuit or pyjamas. See our TOG Guide for guidance on what to wear underneath.

Should I buy a bigger sleeping bag for my baby to grow
into?

No. A sleeping bag that is too large may not fit securely around the neck and armholes. Choose the size that fits your child now, using
their height as your main guide.

How do I know if my baby is too hot or cold?

Check your baby's chest or the back of their neck. They
should feel comfortably warm, not hot or sweaty. Don't use hands and feet as your main guide, as these can naturally feel cooler.

Can my baby use a sleeping bag once they start rolling?

Yes. A correctly fitted baby sleeping bag allows your baby
to move their arms and legs naturally. Always place your baby on their back at the beginning of every sleep and follow current safer sleep guidance.

What's the difference between a baby sleeping bag and a
Sleeping Bag with Feet?

A classic baby sleeping bag keeps both legs inside the bag,
with plenty of room to kick and move. A Sleeping Bag with Feet has separate legs and foot openings, giving babies and children more freedom to crawl, walk and move around before and after sleep.