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Thermal suits

Find thermal suits for babies and young children that help keep the body warm on chilly days. Choose from soft, practical styles with a comfortable fit, freedom of movement and thoughtful details that make everyday dressing easier throughout the season.

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Cuddle thermo suitCuddle thermo suit
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Krammo thermo suitKrammo thermo suit
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Ozu thermo suitOzu thermo suit
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Krammo thermo suitKrammo thermo suitKrammo thermo suit
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Ozai thermo suitOzai thermo suit
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thermo suitthermo suit
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Thermal suits

Thermal suits for babies and young children in the cold season

A thermal suit is a practical choice when your child needs warmth around the whole body on chilly days. It is especially useful for babies and young children who need to stay warm on walks, in the pram, at the playground or on the way to and from daycare. When choosing a suit, fit, season and the small practical details often make the biggest difference.

Many parents use a thermal suit as a flexible layer between lightweight outerwear and a warm snowsuit. In autumn and winter, a baby thermal suit can be a great option when your child needs to stay warm without feeling too bundled up. For slightly older children, it is often important that the suit is easy to move in, can handle outdoor play and works well in a busy everyday routine.

In our selection, you will find children's thermal suits in different sizes and styles, making it easier to choose according to your child's age, needs and the temperature outside.

Which thermal suit should you choose for age and use?

There is a big difference between the needs of a newborn and a child running around at kindergarten. For the smallest sizes, around 50-74, soft materials, easy dressing and undressing, and enough room for a nappy are often the most important things. A thermal suit with a two-way zip and a slightly roomy fit makes good sense here, as it makes nappy changes easier while also leaving a little room to grow.

For babies in sizes 80-92, a little extra length in the body and good freedom of movement in the arms and legs can be helpful. Your child may be sitting, crawling or starting to pull themselves up, so the suit needs to move with them without feeling tight. For toddlers in sizes 98-110, durability and practical details become even more important, as the suit is often used outdoors every day.

One choice that often matters more than you might think is the foot design:

  • Thermal suit with feet works well for small babies who do not yet wear shoes regularly and need extra warmth around their feet.
  • Footless thermal suit is often better for children who walk independently and need to wear boots or thermal boots.

If you are unsure between two sizes, many parents choose a little growing room so the suit can be used throughout the season. It should not be so large, however, that it restricts movement or loses warmth because there is too much air around the body.

Materials and features in thermal suits make everyday life easier

A good thermal suit should do more than keep your child warm. It also needs to work when your child is sitting still in the pram, being carried, crawling around or playing outside. That is why the materials matter. Many styles have a water-repellent outer layer in polyester or nylon, an insulating middle layer and a softer inside. Cotton is often used closer to the skin, helping the suit feel more comfortable to wear.

This creates a suit that retains warmth well and feels comfortable for your child. For everyday use in cool weather, water-repellent is often enough, but it is useful to know the difference: water-repellent materials handle light moisture, drizzle and snow, while waterproof outerwear offers better protection when the weather is very wet.

It can also be worth looking for details such as:

  • a high collar that helps shield against wind and cold
  • reflective details that make your child more visible during the darker months
  • zips at the front or along the leg that make the suit easier to put on and take off
  • an adjustable hood and good room through the crotch and over a nappy

On very wet days, rainwear or thermal rainwear will often be a better choice, while thermal suits are ideal for dry, cold and changeable days.

Thermal suits for autumn and winter without overheating your child

Thermal suits are typically a good choice from autumn and through the colder months, when your child needs a little extra warmth around the whole body. But that does not mean the warmest style is always the best. Too much padding can quickly become impractical, especially if your child is active or needs to go in and out several times during the day.

During transitional seasons, a lighter thermal suit may be plenty when combined with soft layers underneath. When it gets colder, layering often makes the most sense, as it allows you to adjust to the temperature and your child's activity level. A bodysuit or another soft base layer, possibly with a warm top, makes it easier to find the right balance between warmth and comfort.

If you choose a footless style, it is also a good idea to think about the full outfit together with warm shoes or winter boots. A hat and mittens also make a big difference on cold mornings, and you will find more good options in our hats and gloves category.

Fit and care give peace of mind

A thermal suit should be easy to use again and again in everyday life. That is why many parents also look at whether it can be machine washed and whether the material keeps its shape and function after many outdoor adventures and washes. It is always a good idea to follow the care instructions on the individual suit, as outer materials, linings and surface treatments can vary from style to style.

The fit can be roomy, but not so large that your child disappears inside it. Especially when buying for a full season, it can be tempting to size up a lot. However, a thermal suit that is too big can be difficult to move in and may feel less warm in use. Instead, look for a style with a little extra length and room, without it becoming too loose.

At House of Kids, you will find thermal suits selected with everyday needs in mind: warmth, freedom of movement, practical details and materials that feel comfortable for your child. This makes it easier to find a style that suits both age, season and the way it will be used.

Size Guide

Find the right size for your child

Use the guide below to quickly choose the right size. The table shows the typical height and age per size. Children grow differently, and brands can vary slightly in fit - if in doubt, feel free to choose one size up.

Clothing sizes

Age Size (cm) Height (cm)
0 - 1 mo 50 45 - 50
1 - 2 mo 56 51 - 56
2 - 4 mo 62 57 - 62
4 - 6 mo 68 63 - 68
6 - 9 mo 74 69 - 74
9 - 12 mo 80 75 - 80
12 - 18 mo 86 81 - 86
18 - 24 mo 92 87 - 92
2 - 3 yrs 98 93 - 98
3 - 4 yrs 104 99 - 104
4 - 5 yrs 110 105 - 110
5 - 6 yrs 116 111 - 116
6 - 7 yrs 122 117 - 122
7 - 8 yrs 128 123 - 128
8 - 9 yrs 134 129 - 134
9 - 10 yrs 140 135 - 140
10 - 11 yrs 146 141 - 146
11 - 12 yrs 152 147 - 152
12 - 13 yrs 158 153 - 158
13 - 14 yrs 164 159 - 164
14 - 15 yrs 170 165 - 170
15 - 16 yrs 176 171 - 176

Hats and head circumference

Head circumference Age
47 cm 0 - 3 mo
49 cm 6 - 12 mo
51 cm 1 - 2 yrs
53 cm 3 - 4 yrs
55 cm 5 - 10 yrs

Children have different head circumferences - choose one size up if your child has a slightly larger head than their peers.

Shoes and growth allowance

  • Growth allowance: approx. 1.5 cm for regular shoes.
  • Growth allowance: approx. 1.0 cm for ballerina or first-walker shoes.

Example: If the foot measures 15.0 cm, choose a shoe with an inner length of approx. 16.5 cm.

Socks and tights

Socks and tights may shrink slightly in the wash - choose one size up if in doubt.

If you are unsure about the size or fit, you are always welcome to contact our customer service - we are happy to help you find the right size.

📞 +45 87 800 406 ✉️ mail@houseofkids.dk


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