Last updated: August 6, 2021

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A baby sleeping bag is the best alternative to conventional baby blankets. Your baby will be kept warm, both in winter and in summer. In addition, sleeping bags are much safer for babies because the head is not covered and therefore air is always supplied.

In a sleeping bag, your baby has maximum freedom of movement and is always well protected. There are various models on the market that leave nothing to be desired. You can choose between summer and winter sleeping bags, choose sleeping bags with or without sleeves and decide on the material and size. There are even baby sleeping bags that grow with your baby and ones that can be worn in all seasons.


  • A baby sleeping bag is considered the optimal alternative to conventional blankets and pads. It offers maximum comfort and thermal protection and creates the necessary freedom of movement.
  • Depending on your needs and tastes, you can choose between summer, winter, all-year sleeping bags, romper bags and sleeping bags with feet.
  • When buying, you should consider criteria such as the right size, the right material, care instructions, the type of sleeves and the type of closure.

The Best Baby Sleeping Bag: Our Picks

Buying and rating criteria for baby sleeping bags

The selection of baby sleeping bags is large and with this variety it is often difficult to find the right one. The following criteria can help you make your baby sleeping bag purchase easier and compare the offers better. We have compiled the most important buying criteria for you here:

In the following, we will explain in more detail what the criteria are.


In order to ensure safety during carrying and optimal comfort for the baby, the right size according to age and the right fit are decisive criteria for baby sleeping bags. The sleeping bag must neither be too big nor too small, otherwise the benefits of the sleeping bag will not be fulfilled and its use can be dangerous.

If the baby sleeping bag is too big, the baby may slip into it and, due to the large amount of space, the body heat may not be stored in the sleeping bag and the baby may cool down. If the baby sleeping bag is too small, the baby has too little space and can be constricted. Also make sure the neckline is the perfect size.

At least one adult finger should fit between the neck and the fabric. To find the right size for your baby sleeping bag, you can use this rule of thumb as a guide: Body length - head length + 10 to 15 cm The extra 10 cm serves as freedom of movement. This means that the baby can still move around well in the sleeping bag. More extra space is not good, because otherwise the heat regulation is disturbed.

After measuring, you can round up to the next size if there is a maximum difference of 2 cm. Otherwise, always round off. A baby should grow out of the baby sleeping bag, not into it. This is especially difficult with newborns, as babies grow very quickly and a lot in the first few months. That's why a baby sleeping bag that grows with the baby would be ideal for newborns. We have compiled the standardised sizes for baby sleeping bags for you in the following table. You can always use this as a guide to get the right size for your baby.

Sleeping bag size body size age weight
44 smaller than 50 cm newborn less than 2 kg
50 / 56 50 - 56 cm 0 to 2 months 2 - 3 kg
56 / 62 56 - 62 cm 2 to 3 months 3 - 5 kg
68 / 74 68 - 74 cm 4 to 9 months 5 - 9 kg
80 / 86 80 - 86 cm 10 to 18 months 9 - 13 kg

Every baby is individual and may differ from the numbers in the chart. Therefore, always take a size in which your baby feels comfortable and has enough room to romp.

Material / care instructions

The most common materials for baby sleeping bags are cotton and terry cloth. They are characterised by the fact that they are particularly easy to care for, skin-friendly and durable. Depending on the season, a different material is recommended or you can choose a year-round sleeping bag.

For summer, a cotton sleeping bag without lining and without sleeves is ideal. Cotton sleeping bags are also easy to clean and can usually be washed and dried at up to 60 degrees. For warm winter sleeping bags, materials such as nicki or wool fleece, as well as terry cloth, are ideal. For warm, lined sleeping bags, care is often not so easy, as the sleeping bag can only be washed at low temperatures and cannot be dried. Please always follow the manufacturer's care instructions to enjoy your sleeping bag for as long as possible.

Sleeves and closure

Baby sleeping bags keep warm both with and without sleeves. Models with sleeves are really only suitable for really cold winter nights or for walks outside as a carriage insert. Sleeping bags without sleeves allow the baby more freedom of movement air supply. So it is up to your own preference and the desired use of the sleeping bag whether sleeves are needed or not. The right closure of the baby sleeping bag can be very helpful.

Especially if the baby needs to be changed during the night or if it does get too warm in the sleeping bag. A zip on the side or front of the sleeping bag is the best choice. This way it is always within reach. It is very important that the zipper has a locking mechanism so that it cannot be opened by the baby's own movements. For night-time nappy-changing, it is practical if the foot section can be opened easily.

Guide: Frequently asked questions about baby sleeping bags answered in detail

The purchase of a baby sleeping bag should be well thought out. This consideration is accompanied by questions that we have compiled and answered in detail for you here.

What is a baby sleeping bag and why do you need one?

A baby sleeping bag is ultimately the safer alternative to a blanket and pad. It is particularly suitable for newborns, but also for toddlers, and provides maximum comfort and thermal protection. A sleeping bag ensures that the baby is always covered without being restricted in movement. In addition, a sleeping bag protects against overheating and hypothermia.

Excess heat should be dissipated through openings in the sleeping bag. In contrast, a sleeping bag helps to retain heat at low temperatures, prevents "trampling away" and thus protects against hypothermia. A sleeping bag is a safer alternative to blankets, as these can become wrapped around the baby's head due to too much movement, posing a risk of oxygen deprivation.

Baby Schlafsack

A baby sleeping bag keeps your baby warm and helps regulate your pet's body temperature. This way you can avoid overheating or hypothermia. Image source: / Peter Oslanec

A baby sleeping bag is especially recommended in the first year of life, but can be used as long as the baby sleeps restlessly. It is important that a baby sleeping bag is only used until the toddler can walk independently. This is because the sleeping bag can be a tripping hazard during nighttime trips to the toilet or to the parents' bed.

What should be taken into account when it comes to wearing comfort?

The baby sleeping bag should of course fit perfectly. But unlike clothes, the rule here is: It is better to grow out of it than to grow into it. A sleeping bag that is too big can be dangerous for babies because the head can slip through the opening and there is no air supply.

When it comes to comfort, you should of course pay attention to the material as well as the size. Sleeping bags with a cosy and soft inner material and a soft but robust outer material are best. Also make sure that there are no thick seams or pressing buttons.

How much does a baby sleeping bag cost?

Depending on the brand and additional features (e.g. sleeping bag that grows with you), prices can vary greatly. The quality and the material used are also important. While a summer cotton sleeping bag is usually in the lower price segment, a winter sleeping bag lined with fur is in the higher price range. Here you will find a clear table with the most important categories and price ranges:

Type of sleeping bag price range
Summer sleeping bag 20 - 90 €
Winter sleeping bag 30 - 150 €
All-season sleeping bag 30 - 100 €
Romper bag 10 - 40 €
Sleeping bag with feet 30 - 70 €

Always make sure you buy a durable product that you will be happy with for a long time.

What types of baby sleeping bags are there?

There are five different types of baby sleeping bags. On the one hand, there are sleeping bags that are adapted to the seasons. On the other hand, there are those that are adapted to the age.

  • Summer sleeping bag for babies
  • Winter sleeping bag for babies
  • Year-round sleeping bag for babies
  • Sleeping bag for babies
  • Sleeping bag with feet for babies

The main difference between summer and winter sleeping bags is the material. Summer sleeping bags for babies are usually made of thin and air-permeable material and are not thickly filled.

They also usually do not have sleeves, but simple straps. They are very easy to handle and are quickly ready for use again after washing. Winter sleeping bags are cosy, soft and warm and are particularly suitable for low temperatures. These sleeping bags are lined with warm materials, such as down, and thus keep the baby well warm.

As a rule, winter sleeping bags for babies are more expensive than summer sleeping bags because higher quality materials are used. The disadvantage is that lined sleeping bags take longer to dry. All-season sleeping bags can be worn in winter as well as in summer. These sleeping bags usually consist of several pieces that are very warm when worn together, but can be used separately at higher temperatures.

By purchasing this model, you can save yourself the trouble of buying two sleeping bags depending on the season. The romper bag is especially suitable for newborns. It is a kind of pouch that fits tightly to the chest with a wide elastic band. The arms and head are therefore not covered.

The romper bag gives a lot of freedom of movement and makes the baby feel safe and warm. However, it should not be used at low temperatures and is also only suitable for small babies. A sleeping bag with feet, similar to trousers, should be used for slightly older babies, as the sleeping bag allows them to crawl and kick.

It is essential to put on socks or stockings as the feet are not covered. In general, this sleeping bag is not ideal for low temperatures and children who can already walk, as there is a risk of tripping.

Are there sleeping bags for babies that grow with the child?

To avoid having to buy a new sleeping bag for your baby, you can buy a baby sleeping bag that grows with your baby. These are usually sleeping bags where the shoulder straps can be adjusted to different lengths with several buttons or buckles. This mechanism allows you to adjust the sleeping bag to your baby's size.

What alternatives are there to baby sleeping bags?

As an alternative to baby sleeping bags, classic blankets and pads can be used. However, there is a risk that the baby will cover itself by turning or, in the worst case, pull the blanket over its head. If your baby is no longer comfortable in a classic sleeping bag, a sleeping bag with feet is the best choice. Alternatively, you can dress your baby in warm pyjamas and socks.

What do I wear under the sleeping bag?

At higher temperatures, a bodysuit under the sleeping bag is usually enough. At lower temperatures, it is advisable to combine a bodysuit with pyjamas or cosy trousers and a top.

However, since every baby feels temperatures differently, you have to find out individually whether your baby is wearing too much or too little. You can find out by doing a quick test on the back of the neck: If the neck is moist and warm, the baby is too warm. If the skin is cold, your baby may be cold.


A baby sleeping bag is a good investment if you want to keep your child safe and warm at night. In a baby sleeping bag, your baby has a lot of freedom of movement, but cannot kick the sleeping bag away and is therefore warmed throughout. Most baby sleeping bags have a zip so that changing nappies at night is child's play.

When buying a baby sleeping bag, some criteria should be taken into account in order to purchase a durable, qualitative and useful product. Sleeping bags that can be used all year round and grow with the baby are particularly practical. Most of the materials of the sleeping bags are well tolerated by the skin and easy to care for.

(Cover photo: unsplash / Kevin Keith)