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A baby sleeping bag is a wearable blanket designed to replace traditional baby blankets and sheets. It comes with a fitted neck opening and arm holes, which prevent the baby from getting tangled as is the case with traditional blankets. When trying to decide which sleeping bag to purchase for your baby, there are several factors to consider including:


It is important to ensure that you buy the right sized baby sleeping bag. While it may be tempting to buy a sleeping bag that your baby will grow into, this may not always be safe at the moment. If the sleeping bag is too big, the baby may slip down inside the neck or slide round inside it. Generally, baby sleeping bags are available in sizes 0-6 months, 6-18 months as well as 18-36 months.

TOG rating and warmth

Consider buying baby sleeping bags that made of natural fiber that adjusts to temperature changes rather than tog rated. Many baby sleeping bags use the European TOG rating system in order to indicate which season the sleeping bag is suitable for and how warm it is. The warmth of the sleeping bag increases with increase in TOG rating. TOG is basically a way of indicating how many blankets a given sleeping bag is equivalent to. Those with a rating of 1.2 and below are ideal for spring and summer while those with a 2-2.5 rating are ideal for autumn and winter. 

Fabric and filling

Depending on the manufacturer, there are various fabric and fillings that are used in sleeping bags. Common fabrics used include cotton, merino or a combination of the two. Popular sleeping bag fillings include polyester and wool. Whatever you do, it’s advisable to go for bags made from natural fabrics and with natural filling as they adapt to temperature changes. Also consider the cleaning requirements of the materials before buying.

Front zip or side zip and domes?

Baby sleeping bags with zips are quite convenient as all you have to do pop your baby in and zip down. Bags with front zips are particularly more favorable as they don’t come with the hassle of popping shoulder domes and the risk of dome failure due to repeated use is eliminated. In addition, the arm holes are a smaller and this is a closer fit. For babies that are less than six months old, sleeping bags with side zips or domes are more convenient due to the frequent night changes. 

Travel bag or standard sleeping bag

If you have your baby out in the evening or are usually out and about with him during the day, consider investing a sleeping bag that can be used in a push chair. This means that even during nap time, you can put your baby into the pushchair and they will instinctively know that you expect them to sleep. However, it’s important to factor in the chance that they may get their foot through the front travel slot. In such a case, you will want to opt for a baby sleeping bag with a front zip.

Sizing Charts

Zipadee Zip

Small 3-6 months 24-28 inches ~12-19lbs
Medium 6-12 months 29-32 inches ~19-26lbs
Large 12-24 months 33-40 inches ~26-34lbs

Flying Squirrel PJs

12-24m 1-3 years up to 39 inches ~26-34lbs
2/3T 3-6 years up to 48 inches ~34-49lbs
4/5T 6-10 years up to 56 inches ~49-87lbs