The big sleeping bag guide from popolini

Not too warm, not too cold – the right sleepwear makes for good sleep

Babies and toddlers cannot yet regulate their body temperature well on their own. That makes a suitable sleeping environment all the more important – above all a sleeping bag that matches the room temperature.

Why is the right temperature so important?

Sweating in summer, freezing in winter – both are unpleasant, can impair sleep and entail health risks. A sleeping bag that is too warm can lead to heat build-up, while one that is too thin doesn’t keep your child warm enough in winter. So: choose the sleeping bag according to the room temperature – and adjust the clothing underneath.

Tip: room temperature

Look not only at the season or the outside temperature, but above all at the temperature in the bedroom. Combine sleeping bag and clothing according to how much warmth your child needs.

What does TOG mean?

The TOG value describes how warm a sleeping bag is. The lower the TOG value, the lighter and cooler the sleeping bag; the higher the TOG value, the warmer it is.

Guideline: which sleeping bag at which temperature?

• 0.5TOG

  Summer sleeping bags

  Room temperature 24 °C and above

  Materials

  Muslin, fine rib, single jersey, interlock

  Underneath

  Short-sleeved bodysuit

• 1–1.5TOG

  All-season sleeping bags

  Room temperature 20–24 °C

  Materials

  Double-layer interlock, double-layer fine rib, cotton fleece

  Underneath

  Sleepsuit

• 2–2.5TOG

  Winter sleeping bags

  Room temperature 16–21 °C

  Materials

  Double-layer cotton fleece, double-layer nicky, wool fleece, poplin with lavalan wool

  Underneath

  Bodysuit and sleepsuit

Tip: the neck test

The table is a guideline – every child is different. Feel the neck and hands: warm, but not sweaty, is ideal.

Sleeping bag with or without sleeves?

Whether a sleeping bag should have sleeves depends on the temperature in the bedroom, your child’s need for warmth and the season. A sleeping bag with sleeves offers extra warmth and a feeling of security – especially popular for newborns and on cool nights.

Separate sleeping bag sleeves give maximum flexibility: they are easy to put on, keep the arms pleasantly warm and still leave full freedom of movement. This way the sleeping bag adapts to different temperatures.

Shop sleeping bag sleeves

Safety

A well-fitting sleeping bag stays securely on the shoulders, so no fabric can slip over the face.

Comfort

Enough room to kick gives security and freedom of movement, so your baby feels completely comfortable.

Long-term companion

A sleeping bag that adapts to your child and goes through many growth spurts – fewer new purchases, more sustainability.

What is the right sleeping bag size?

How the sleeping bag fits safely and comfortably.

Bulb-shaped sleeping bag

The ideal length is your child’s height from head to toe plus about 10 cm. This leaves enough freedom of movement and keeps the sleeping bag from slipping or riding up over the face.

Size chart: bulb-shaped sleeping bag

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Sleeping bag size	Body height	~ Age
Preemie 50 cm	44-50 cm	Premature
Newborn 60 cm	50-62 cm	0-3 M
S 70 cm	62-74 cm	3-9 M
M 90 cm	74-98 cm	9-36 M
L 110 cm	98-116 cm	3-5 Y
XL 130 cm	116-122 cm	5-7 Y

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Please note that the age and size guidelines given do not always correspond exactly, as every child is unique.

Sleeping bag with feet

The size is given as body height, and the sleeping bag grows with your child over 3 sizes. It offers plenty of freedom of movement – ideal for children who already walk or move a lot in their sleep.

Size chart: sleeping bags with feet

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Sleeping bag size	Body height	~ Age
74/80	74-86 cm	6-18 M
86/92	86-98 cm	1.5-3 Y
98/104	98-110 cm	3-5 Y
110/116	110-122 cm	5-7 Y

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The sleeping bag with feet should be floor-length when you buy it and then grows with your child up to three sizes. Please note that the age and size guidelines given do not always correspond exactly, as every child is unique.

Sleeping bags for the little ones

Which sleeping bag suits newborns and preemies?

In the first weeks of life, safety comes first – especially during sleep. A well-fitting sleeping bag helps prevent overheating and dangerous slipping.

Our Newborn sleeping bags are 60 cm long and made for the needs of newborns: gentle on delicate skin, good for the environment and responsibly produced in Europe.

Shop newborn sleeping bags

Between two sizes?

If your baby only just fits into a 70 cm sleeping bag that is already almost too small, choose the next size up, e.g. 90 cm. A few small stitches can narrow the armholes if needed. What matters: the fabric must not be able to slip over the head.