How Many Sleeping Bags Does Your Baby Actually Need?

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Why watch this video?

In this video, we answer a question many parents ask themselves: do you really need a summer bag, a mid-season bag and a winter bag to get through the whole year? With most polyester sleeping bags on the market, the answer is often yes, since this synthetic material doesn't breathe well and forces you to switch bags with every season to avoid overheating or the cold. Our 4 Seasons sleeping bags, made with Swisswool and organic cotton, work differently: Swisswool naturally regulates temperature by wicking away moisture, which means a single sleeping bag can work all year round, in a room kept between 16 and 22°C. The one exception is during particularly hot summer days, when a lighter organic cotton summer bag may be more comfortable. This video shows why, with the right material, one sleeping bag can do the job of three, for a simpler and more sustainable investment.

In this video, you'll discover:

  • Why polyester sleeping bags often require buying several per year
  • How Swisswool regulates temperature all year round
  • Why a room kept between 16 and 22°C allows for a single 4 Seasons sleeping bag
  • When a summer sleeping bag is still worth having as a backup
  • How this choice simplifies your investment over several years

Video transcript

Most parents buy a winter sleeping bag, a summer sleeping bag, and often a third one for everything in between. But that isn't always necessary.

Almost all baby sleeping bags are filled with synthetic fibers. While they may have the correct TOG rating, synthetic insulation doesn't adapt very well when the room temperature changes. That often leaves parents wondering whether their baby is too warm or too cold — and buying several sleeping bags throughout the year.

At Zizzz, we believe your baby's sleep should be as natural and healthy as possible. That's why we fill our sleeping bags with Swisswool instead of synthetic fibers.

Swisswool is a natural wool insulation that's breathable and naturally thermoregulating. It helps regulate your baby's body temperature and absorbs moisture naturally, keeping your baby drier and more comfortable throughout the night — even if they tend to sweat while sleeping. The TOG rating becomes much less important.

Wool isn't a complete replacement for TOG recommendations. What it does provide is a wider comfort margin, making your baby more comfortable if the room temperature varies during the night. That's why many parents find they need fewer sleeping bags to cover the whole year.

The outer fabric is made from GOTS-certified organic cotton that's incredibly soft against delicate skin, naturally hypoallergenic, and resistant to dust mites.

And because we know what everyday life with a baby is like, we've added a long two-way zipper for easy nighttime diaper changes, a soft chin guard for extra comfort, and nickel-free snap buttons that let you adjust the size as your baby grows.

Every Zizzz sleeping bag is carefully handcrafted in a family-run workshop in Portugal using only natural materials and delivered in plastic-free packaging.

For greater peace of mind — and better sleep for both your baby and you. Enjoy free shipping across Switzerland and Europe, plus receive 10 francs off your first order when you sign up for our newsletter. Discover the Zizzz sleeping bag.

Products featured in this video

Frequently asked questions

Can one sleeping bag really work all year round?
Yes, our 4 Seasons sleeping bags with Swisswool filling are designed for a room kept between 16 and 22°C, which covers most of the year in most homes.

When do I need a summer sleeping bag as well?
During periods of intense summer heat, a lighter organic cotton summer bag can be more comfortable than a 4 Seasons bag.

Why do polyester sleeping bags often require several models?
Polyester doesn't breathe well and regulates temperature poorly, which forces parents to switch bags depending on the season to avoid overheating or cold.

Find more answers in our baby sleeping bag questions, or discover our page on Swisswool and our page on breathability.

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